CVE-2026-13757

MEDIUMPre-NVD 6.26.2
EchelonGraph scoreMEDIUM confidence

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

Score 6.2 from GitHub Security Advisory published 2026-06-29. A secondary CVSS source baseline 6.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, a secondary CVSS source

Also known asEUVD-2026-40173 (ENISA EUVD) · GHSA-p2wm-69qx-x25w (GitHub Security Advisories)Source: ENISA EUVD

6.2EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 6.2Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Fixed versions, as the CVE record's CNA (Red Hat, Inc.) states them in the record's workaround: "Red Hat recommends updating p11-kit to version 0.26.3 or later, which introduces a recursion depth limit in the RPC attribute parsing and fully addresses this flaw."

A flaw was found in p11-kit. The RPC message attribute parsing functions p11_rpc_message_get_attribute() and p11_rpc_message_get_attribute_array_value() form a mutually-recursive call chain with no recursion depth limit when processing nested CKA_WRAP_TEMPLATE, CKA_UNWRAP_TEMPLATE, and CKA_DERIVE_TEMPLATE attributes. An unauthenticated attacker with local access to the p11-kit RPC Unix domain socket can send a specially crafted request with deeply nested template attributes, causing stack exhaustion and crashing the p11-kit server process and its dependent services.

CVSS v3
6.2
EG Score
6.2MEDIUMmedium confidence
EG Risk
28
EG Risk 28/100

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)
Severity62% × 45%
Impact severity (EG Severity): CVSS 6.2 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.1% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (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.
EPSS PROB
0.2%
EPSS %ILE
4th
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 (6.2): severity, escalated by confirmed exploitation. This CVE's 6.2 is its impact severity (EG Severity), not escalated.

EG Severity
6.2 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). 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 every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade 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 every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (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

June 29, 2026

Last Modified

October 14, 2026

Advisory Details (2)

Auto-updated Jun 29, 2026
Patch available. Sources: redhat.
Red Hat

2494556 – (CVE-2026-13757) CVE-2026-13757 p11-kit: Stack exhaustion via unbounded recursion in RPC attribute parsing

https://bugzilla.redhat.com/show_bug.cgi?id=2494556
Red HatMentions a patch (unverified)

cve-details

https://access.redhat.com/security/cve/CVE-2026-13757

Patch Availability(23)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntup11-kit-modules (0.25.3-4ubuntu2.2) @ noble2026-10-14ubuntu
redhatcert-manager/cert-manager-istio-csr-rhel9:17914597592026-10-13redhat
redhatcert-manager/jetstack-cert-manager-rhel9:17914597112026-10-13redhat
redhatcert-manager/cert-manager-operator-rhel9:17890290762026-10-13redhat
redhatcert-manager/jetstack-cert-manager-rhel9:17913710692026-10-13redhat
redhatcert-manager/cert-manager-istio-csr-rhel9:17913783952026-10-13redhat
redhatcert-manager/cert-manager-operator-rhel9:17917882872026-10-13redhat
redhatcostmanagement/costmanagement-metrics-rhel9-operator:17908443332026-10-12redhat
redhatcert-manager/jetstack-cert-manager-rhel9:17902232792026-09-28redhat
redhatcert-manager/jetstack-cert-manager-rhel9:17905899122026-09-28redhat
redhatcert-manager/cert-manager-trust-manager-rhel9:17905985932026-09-28redhat
redhatcert-manager/cert-manager-operator-rhel9:17905898552026-09-28redhat
redhatcert-manager/cert-manager-istio-csr-rhel9:17905899142026-09-28redhat
redhatcert-manager/cert-manager-istio-csr-rhel9:17902237192026-09-28redhat
redhatcert-manager/cert-manager-operator-rhel9:17902724262026-09-28redhat
redhatrhui5/rhua-tp-rhel9:17872412602026-08-24redhat
redhatdiscovery/discovery-ui-rhel9:17866348252026-08-13redhat
redhatrhui5/rhua-rhel9:17865335292026-08-12redhat
redhatinsights-proxy/insights-proxy-container-rhel9:17864336562026-08-11redhat
redhatp11-kit-0:0.26.4-1.el9_82026-08-03redhat
redhatp11-kit-0:0.26.4-1.el10_22026-08-03redhat
redhatp11-kit-main-0.26.4-1.hum12026-07-12redhat
redhatp11-kit-main-0.26.2-1.2.hum12026-07-10redhat

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

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
p11-kit0.23.22-1 ... 0.26.4-1 (33 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
p11-kit0.24.1-2 ... 0.26.5-1 (25 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
p11-kit0.25.10-1 ... 0.26.5-1 (9 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
p11-kit0.25.10-1 ... 0.26.2-3 (7 versions)
  • every version up to 0.26.4-1: fixed in 0.26.4-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(6)

Data Freshness Timeline

(refreshed 7× in last 7d / 54× 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 100 of 331 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. None are among the latest 100 rows. The 231 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 0.2% · 4th percentile
  2. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  3. 2026-10-30 16:33 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  4. 2026-10-29 16:32 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  5. 2026-10-28 16:31 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  6. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  7. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  8. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  9. 2026-10-25 14:48 UTCEG score recompute
  10. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  11. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  12. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  13. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  14. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  15. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  16. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  17. 2026-10-18 05:03 UTCEG score recompute
  18. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  19. 2026-10-16 16:40 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  20. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  21. 2026-10-14 20:44 UTCEG score recompute
  22. 2026-10-14 20:44 UTCVendor advisory
  23. 2026-10-14 20:44 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  24. 2026-10-14 19:39 UTCEG score recompute
  25. 2026-10-14 19:39 UTCVendor advisory
Show 75 more
  1. 2026-10-14 19:38 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  2. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  3. 2026-10-14 03:29 UTCEG score recompute
  4. 2026-10-14 03:29 UTCVendor advisory
  5. 2026-10-14 03:29 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  6. 2026-10-14 03:15 UTCEG score recompute
  7. 2026-10-14 03:15 UTCVendor advisory
  8. 2026-10-14 03:15 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  9. 2026-10-13 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  10. 2026-10-12 21:29 UTCEG score recompute
  11. 2026-10-12 21:29 UTCVendor advisory
  12. 2026-10-12 21:28 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  13. 2026-10-12 21:03 UTCEG score recompute
  14. 2026-10-12 21:03 UTCVendor advisory
  15. 2026-10-12 21:03 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  16. 2026-10-12 16:34 UTCEG score recompute
  17. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  18. 2026-10-11 20:11 UTCEG score recompute
  19. 2026-10-11 18:23 UTCEG score recompute
  20. 2026-10-11 14:56 UTCEG score recompute
  21. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  22. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  23. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  24. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  25. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  26. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  27. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  28. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  29. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  30. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  31. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  32. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  33. 2026-09-29 01:20 UTCEG score recompute
  34. 2026-09-29 01:20 UTCVendor advisory
  35. 2026-09-29 01:20 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  36. 2026-09-29 00:56 UTCEG score recompute
  37. 2026-09-29 00:56 UTCVendor advisory
  38. 2026-09-29 00:56 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  39. 2026-09-28 15:34 UTCEG score recompute
  40. 2026-09-28 15:34 UTCVendor advisory
  41. 2026-09-28 15:34 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  42. 2026-09-28 14:28 UTCEG score recompute
  43. 2026-09-28 14:28 UTCVendor advisory
  44. 2026-09-28 14:28 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  45. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  46. 2026-09-28 11:29 UTCEG score recompute
  47. 2026-09-28 11:29 UTCVendor advisory
  48. 2026-09-28 11:29 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  49. 2026-09-28 10:27 UTCEG score recompute
  50. 2026-09-28 10:27 UTCVendor advisory
  51. 2026-09-28 10:27 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  52. 2026-09-28 08:29 UTCEG score recompute
  53. 2026-09-28 08:29 UTCVendor advisory
  54. 2026-09-28 08:29 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  55. 2026-09-28 08:08 UTCEG score recompute
  56. 2026-09-28 08:08 UTCVendor advisory
  57. 2026-09-28 08:08 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  58. 2026-09-27 13:47 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  59. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  60. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  61. 2026-09-23 07:29 UTCEG score recompute
  62. 2026-09-23 07:29 UTCVendor advisory
  63. 2026-09-23 07:29 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  64. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  65. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  66. 2026-09-18 06:57 UTCEG score recompute
  67. 2026-09-18 06:57 UTCVendor advisory
  68. 2026-09-18 06:57 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  69. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  70. 2026-09-14 00:52 UTCEG score recompute
  71. 2026-09-14 00:52 UTCVendor advisory
  72. 2026-09-14 00:52 UTCGHSA enrichmentGHSA-p2wm-69qx-x25w · GitHub CVSS 6.2
  73. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.1% · 4th percentile
  74. 2026-09-12 15:14 UTCEG score recompute
  75. 2026-09-12 15:14 UTCVendor advisory

Frequently asked(5)

What is CVE-2026-13757?
CVE-2026-13757 is a medium-severity vulnerability; its CVE record was published on June 29, 2026. A flaw was found in p11-kit. The RPC message attribute parsing functions p11_rpc_message_get_attribute() and p11_rpc_message_get_attribute_array_value() form a mutually-recursive call chain with no recursion depth limit when processing nested CKA_WRAP_TEMPLATE, CKA_UNWRAP_TEMPLATE, and…
When was CVE-2026-13757 made public?
CVE-2026-13757 was made public on June 23, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on June 29, 2026. EchelonGraph's copy of the record carries a last-modified date of October 14, 2026; the record at its source may have been updated since.
Is CVE-2026-13757 actively exploited?
CVE-2026-13757 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (4th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-13757?
CVE-2026-13757 has a CVSS base score of 6.2 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-13757?
A fix for CVE-2026-13757 is available: update to the fixed version the vendor names in its advisory. Fixed versions, as the CVE record's CNA (Red Hat, Inc.) states them in the record's workaround: "Red Hat recommends updating p11-kit to version 0.26.3 or later, which introduces a recursion depth limit in the RPC attribute parsing and fully addresses this flaw." The vendor advisories EchelonGraph has for CVE-2026-13757 are linked in the Vendor Advisories panel on this page.

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