CVE-2026-32811

HIGHNVD 7.58.2
EchelonGraph scoreMEDIUM confidence

“▲” beside the score: it is higher than NVD's CVSS score.

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-03-18. NVD baseline CVSS 7.5; sources differ by 0.7.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-13437 (ENISA EUVD) · GHSA-r8x2-fhmf-6mxp (GitHub Security Advisories)Source: ENISA EUVD

8.2EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.5Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. When using Heimdall in envoy gRPC decision API mode with versions 0.7.0-alpha through 0.17.10, wrong encoding of the query URL string allows rules with non-wildcard path expressions to be bypassed. Envoy splits the requested URL into parts, and sends the parts individually to Heimdall. Although query and path are present in the API, the query field is documented to be always empty and the URL query is included in the path field. The implementation uses go's url library to reconstruct the url which automatically encodes special characters in the path. As a consequence, a parameter like /mypath?foo=bar to Path is escaped into /mypath%3Ffoo=bar. Subsequently, a rule matching /mypath no longer matches and is bypassed. The issue can only lead to unintended access if Heimdall is configured with an "allow all" default rule. Since v0.16.0, Heimdall enforces secure defaults and refuses to start with such a configuration unless this enforcement is explicitly disabled, e.g. via --insecure-skip-secure-default-rule-enforcement or the broader --insecure flag. This issue has been fixed in version 0.17.11.

CVSS v3
7.5
EG Score
8.2HIGHmedium confidence
EG Risk
68
EG Risk 68/100

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)
Severity82% × 45%
Impact severity (EG Severity): CVSS 8.2 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
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 public PoC (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
0.3%
EPSS %ILE
24th
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 (8.2): severity, escalated by confirmed exploitation. This CVE's 8.2 is its impact severity (EG Severity), not escalated.

EG Severity
8.2 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.3% 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 public PoC (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

March 20, 2026

Last Modified

June 17, 2026

Advisory Details (4)

Auto-updated Aug 2, 2026
Patch available. Sources: github_commit, github_pr, github.
Web page

envoy/api/envoy/service/auth/v3/attribute_context.proto at 105b4acd422d67fcff908ec38d91c7676d079939 · envoyproxy/envoy · GitHub

https://github.com/envoyproxy/envoy/blob/105b4acd422d67fcff908ec38d91c7676d079939/api/envoy/service/auth/v3/attribute_context.proto#L146-L147
GitHub advisoryMentions a patch (unverified)

Path received via Envoy gRPC corrupted when containing query string · Advisory · dadrus/heimdall · GitHub

https://github.com/dadrus/heimdall/security/advisories/GHSA-r8x2-fhmf-6mxp
GitHub pull request

fix: Split query from path in envoy gRPC based ExtAuth integration

Fix merged in dadrus/heimdall PR #3106 on 2026-03-15 — awaiting tagged release

https://github.com/dadrus/heimdall/pull/3106
GitHub commit

commit 50321b3007db (dadrus/heimdall)

Fix landed in dadrus/heimdall commit 50321b3007db — awaiting tagged release

https://github.com/dadrus/heimdall/commit/50321b3007db1ccafdc6b1cfd6bdc3689c19a502

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
gogithub.com/dadrus/heimdall @ 0.17.11 (fixes >= 0.7.0-alpha, <= 0.17.10)—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

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFix by version rangeDependents
github.com/dadrus/heimdall—
  • 0.7.0-alpha up to 0.17.11: fixed in 0.17.11
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 40× 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 96 of 108 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. 4 repeat rows among the latest 100 are merged into the row they repeat. The 12 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 0.3% · 24th percentile
  2. 2026-11-01 07:54 UTCGHSA enrichmentGHSA-r8x2-fhmf-6mxp · GitHub severity HIGH · GitHub CVSS 8.2
  3. 2026-11-01 07:54 UTCEG score recompute▲ 0.70
  4. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  5. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  6. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  7. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  8. 2026-10-27 16:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  9. 2026-10-27 11:20 UTCEG score recompute
  10. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  11. 2026-10-25 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  12. 2026-10-25 14:35 UTCEG score recompute
  13. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  14. 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  15. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  16. 2026-10-21 16:32 UTCEPSS rescoreEPSS 0.4% · 37th percentile
  17. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  18. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  19. 2026-10-19 00:49 UTCEG score recompute
  20. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  21. 2026-10-18 03:47 UTCEG score recompute
  22. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.4% · 36th percentile
  23. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  24. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  25. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.4% · 35th percentile
Show 71 more
  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  3. 2026-10-12 15:47 UTCEG score recompute
  4. 2026-10-11 19:56 UTCEG score recompute
  5. 2026-10-11 17:09 UTCEG score recompute
  6. 2026-10-11 14:36 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  8. 2026-10-11 08:25 UTCOSV refresh
  9. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  11. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  12. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  13. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  14. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  16. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  17. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  18. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  19. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  20. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  21. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  22. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  23. 2026-09-21 21:01 UTCOSV refresh
  24. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  25. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  26. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  27. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  28. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  29. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  30. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  31. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  32. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  33. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  34. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  35. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  36. 2026-09-02 17:08 UTCOSV refresh
  37. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  38. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  39. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  40. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  41. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  42. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  43. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  44. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  45. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  46. 2026-08-24 14:17 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  47. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  48. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  49. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  50. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  51. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  52. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  53. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  54. 2026-08-16 11:05 UTCEG score recompute
  55. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  56. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  57. 2026-08-14 07:16 UTCEG score recompute
  58. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  59. 2026-08-12 21:57 UTCEG score recompute
  60. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  61. 2026-08-11 21:24 UTCEG score recompute
  62. 2026-08-11 04:27 UTCEG score recompute
  63. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  64. 2026-08-09 19:40 UTCEG score recompute
  65. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  66. 2026-08-09 06:49 UTCEG score recompute
  67. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  68. 2026-08-07 17:19 UTCEG score recompute
  69. 2026-08-06 19:23 UTCEG score recompute
  70. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.3% · 22nd percentile
  71. 2026-08-06 01:30 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-32811?
CVE-2026-32811 is a high-severity vulnerability; its CVE record was published on March 20, 2026. Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. When using Heimdall in envoy gRPC decision API mode with versions 0.7.0-alpha through 0.17.10, wrong encoding of the query URL string allows rules with non-wildcard path expressions to be bypassed. Envoy splits the…
When was the CVE record for CVE-2026-32811 published?
The CVE record for CVE-2026-32811 was published on March 20, 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 June 17, 2026; the record at its source may have been updated since.
Is CVE-2026-32811 actively exploited?
CVE-2026-32811 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (24th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-32811?
CVE-2026-32811 has a CVSS v3 base score of 7.5 (NVD). EchelonGraph synthesises NVD + FIRST EPSS + GHSA into a combined EG score of 8.2 (HIGH).
How do I remediate CVE-2026-32811?
A fix for CVE-2026-32811 is available: update to the fixed version the vendor names in its advisory.

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