CVE-2026-35469

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.7% (51st percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 4 sources updated this week

Also known asEUVD-2026-23298 (ENISA EUVD) · GHSA-pc3f-x583-g7j2 (GitHub Security Advisories)Source: ENISA EUVD

6.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 6.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

spdystream is a Go library for multiplexing streams over SPDY connections. In versions 0.5.0 and below, the SPDY/3 frame parser does not validate attacker-controlled counts and lengths before allocating memory. Three allocation paths are affected: the SETTINGS frame entry count, the header count in parseHeaderValueBlock, and individual header field sizes — all read as 32-bit integers and used directly as allocation sizes with no bounds checking. Because SPDY header blocks are zlib-compressed, a small on-the-wire payload can decompress into large attacker-controlled values. A remote peer that can send SPDY frames to a service using spdystream can exhaust process memory and cause an out-of-memory crash with a single crafted control frame. This issue has been fixed in version 0.5.1.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
45
EG Risk 45/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity65% × 45%
Impact severity (EG Severity): CVSS 6.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.7% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.7%
EPSS %ILE
51st
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (6.5): severity, escalated by confirmed exploitation. This CVE's 6.5 is its impact severity (EG Severity), not escalated.

EG Severity
6.5 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.7% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

April 16, 2026

Last Modified

October 26, 2026

Advisory Details (2)

Auto-updated Apr 29, 2026
Patch available. Sources: github.
GitHub advisoryMentions a patch (unverified)

Memory amplification in SPDY frame parsing leads to denial of service · Advisory · moby/spdystream · GitHub

https://github.com/moby/spdystream/security/advisories/GHSA-pc3f-x583-g7j2
Web page

Release v0.5.1 · moby/spdystream · GitHub

https://github.com/moby/spdystream/releases/tag/v0.5.1

Patch Availability(31)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatopenshift4/ose-hypershift-rhel9:17918049072026-10-20redhat
redhatopenshift-logging/cluster-logging-rhel9-operator:17918301342026-10-14redhat
redhatopenshift-logging/cluster-logging-rhel9-operator:17896591662026-09-23redhat
redhatopenshift-logging/cluster-logging-rhel9-operator:17890503992026-09-16redhat
redhatopenshift-logging/cluster-logging-rhel9-operator:17884395052026-09-10redhat
redhatopenshift4/ose-hypershift-rhel9:17882782602026-09-08redhat
redhatopenshift4/ose-ovn-kubernetes-rhel9:17875602462026-09-03redhat
redhatcluster-observability-operator/cluster-observability-rhel9-operator:17875936372026-08-31redhat
redhatmulticluster-engine/image-based-install-rhel9:17865489182026-08-25redhat
redhatodf4/rook-ceph-rhel9-operator:17867068802026-08-18redhat
redhatopenshift4/ose-ovn-kubernetes-rhel9:17856553902026-08-12redhat
redhatopenshift4/ose-ovn-kubernetes-rhel9:17856007922026-08-12redhat
redhatmicroshift-0:4.19.42-202608062155.p0.g46c9d67.assembly.4.19.42.el92026-08-12redhat
redhatopenshift4/ose-ovn-kubernetes-rhel9:17858575302026-08-11redhat
redhatcontainer-native-virtualization/virt-exportserver-rhel9:17863466202026-08-11redhat
redhatopenshift4/ose-csi-external-provisioner-rhel9:17843192182026-08-06redhat
redhatopenshift4/ose-aws-ebs-csi-driver-rhel9:17843135422026-08-06redhat
redhatopenshift4/ose-openshift-apiserver-rhel9:17845769332026-07-30redhat
redhatopenshift4/ose-openshift-apiserver-rhel8:17845823772026-07-30redhat
redhatopenshift4/ose-ovn-kubernetes-microshift-rhel9:17845486262026-07-28redhat
redhatopenshift4/ose-ovn-kubernetes-microshift-rhel9:17847023982026-07-28redhat
redhatopenshift4/ose-openshift-apiserver-rhel8:17840562552026-07-23redhat
redhatopenshift4/ose-openshift-apiserver-rhel8:17840547952026-07-23redhat
redhatopenshift4/ose-node-feature-discovery:17840557262026-07-23redhat
redhatopenshift4/ose-aws-ebs-csi-driver-rhel9:17837028672026-07-22redhat
redhatflightctl-0:1.1.3-1.el9em2026-07-16redhat
redhatopenshift4/ose-openshift-apiserver-rhel9:17829042342026-07-16redhat
redhatopenshift4/ose-aws-ebs-csi-driver-rhel9:17833581812026-07-15redhat
redhatopenshift4/ose-aws-efs-csi-driver-container-rhel9:17830884462026-07-15redhat
redhatopenshift4/ose-csi-external-provisioner-rhel9:17830843082026-07-15redhat
gogithub.com/moby/spdystream @ 0.5.1 (fixes <= 0.5.0)—ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
golang-github-docker-spdystream0.2.0-1, 0.5.0-1
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
golang-github-docker-spdystream0.2.0-1, 0.5.0-1
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
golang-github-docker-spdystream0.5.0-1
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
golang-github-docker-spdystream0.5.0-1
  • every version on: no fix on record
—
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/moby/spdystream—
  • every version up to 0.5.1: fixed in 0.5.1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(25)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 43× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 340 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 241 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  2. 2026-11-01 07:52 UTCGHSA enrichmentGHSA-pc3f-x583-g7j2 · GitHub severity HIGH
  3. 2026-11-01 07:52 UTCEG score recompute
  4. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  5. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  6. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  7. 2026-10-29 16:15 UTCEG score recompute
  8. 2026-10-29 16:15 UTCVendor advisory
  9. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  10. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  11. 2026-10-26 22:47 UTCEG score recompute
  12. 2026-10-26 22:47 UTCVendor advisory
  13. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  14. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.7% · 51st percentile
  15. 2026-10-25 14:33 UTCEG score recompute
  16. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  17. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.7% · 50th percentile
  18. 2026-10-23 03:06 UTCEG score recompute
  19. 2026-10-23 03:06 UTCVendor advisory
  20. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  21. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  22. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  23. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  24. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  25. 2026-10-18 03:44 UTCEG score recompute
Show 74 more
  1. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  2. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  3. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  4. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  5. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  6. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  7. 2026-10-12 16:11 UTCEG score recompute
  8. 2026-10-11 19:53 UTCEG score recompute
  9. 2026-10-11 17:07 UTCEG score recompute
  10. 2026-10-11 14:34 UTCEG score recompute
  11. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  12. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  13. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  14. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  15. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  16. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  17. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  18. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  19. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  20. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  21. 2026-09-30 07:28 UTCOSV refresh
  22. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  23. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  24. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  25. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  26. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  27. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  28. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  29. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  30. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  31. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  32. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  33. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  34. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  35. 2026-09-11 13:25 UTCEG score recompute
  36. 2026-09-11 13:25 UTCVendor advisory
  37. 2026-09-11 12:21 UTCEG score recompute
  38. 2026-09-11 12:21 UTCVendor advisory
  39. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  40. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  41. 2026-09-09 13:41 UTCEG score recompute
  42. 2026-09-09 13:41 UTCVendor advisory
  43. 2026-09-09 12:40 UTCEG score recompute
  44. 2026-09-09 12:40 UTCVendor advisory
  45. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  46. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  47. 2026-09-07 14:00 UTCEG score recompute
  48. 2026-09-07 14:00 UTCVendor advisory
  49. 2026-09-07 13:14 UTCEG score recompute
  50. 2026-09-07 13:14 UTCVendor advisory
  51. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  52. 2026-09-04 13:29 UTCEG score recompute
  53. 2026-09-04 13:29 UTCVendor advisory
  54. 2026-09-04 12:23 UTCEG score recompute
  55. 2026-09-04 12:23 UTCVendor advisory
  56. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.7% · 49th percentile
  57. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  58. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  59. 2026-09-01 13:50 UTCEG score recompute
  60. 2026-09-01 13:50 UTCVendor advisory
  61. 2026-09-01 12:22 UTCEG score recompute
  62. 2026-09-01 12:22 UTCVendor advisory
  63. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  64. 2026-08-31 13:34 UTCEG score recompute
  65. 2026-08-31 13:34 UTCVendor advisory
  66. 2026-08-31 12:31 UTCEG score recompute
  67. 2026-08-31 12:31 UTCVendor advisory
  68. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  69. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  70. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  71. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.7% · 48th percentile
  72. 2026-08-27 13:35 UTCEG score recompute
  73. 2026-08-27 13:35 UTCVendor advisory
  74. 2026-08-27 13:02 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-35469?
CVE-2026-35469 is a medium-severity vulnerability; its CVE record was published on April 16, 2026. spdystream is a Go library for multiplexing streams over SPDY connections. In versions 0.5.0 and below, the SPDY/3 frame parser does not validate attacker-controlled counts and lengths before allocating memory. Three allocation paths are affected: the SETTINGS frame entry count, the header count in…
When was the CVE record for CVE-2026-35469 published?
The CVE record for CVE-2026-35469 was published on April 16, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 26, 2026; the record at its source may have been updated since.
Is CVE-2026-35469 actively exploited?
CVE-2026-35469 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (51st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-35469?
CVE-2026-35469 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-35469?
A fix for CVE-2026-35469 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-35469 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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