CVE-2026-81829

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-09-17. A secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in SmallRye JWT's AwsAlbKeyResolver, which is used by applications to verify JSON Web Tokens signed by AWS Application Load Balancers. When the AWS_ALB key provider is configured, the resolver constructs the key-fetch URL by directly concatenating the attacker-controlled kid header value from an inbound JWT without sanitizing path traversal characters or query-string separators. This allows an unauthenticated remote attacker to force the application server to issue GET requests to arbitrary paths on the same origin as the configured key endpoint. As a result, non-public endpoints or internal data reachable on that origin may be read by the attacker before JWT signature verification takes place.

CVSS v3
5.3
EG Score
5.3MEDIUMhigh confidence
EG Risk
39
EG Risk 39/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
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
0.6%
EPSS %ILE
46th
KEV
Not listed

CISA SSVCTrack 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). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 17, 2026

Last Modified

September 21, 2026

Advisory Details (2)

Auto-updated Sep 17, 2026
Patch available. Sources: redhat.
redhat

2524980 – (CVE-2026-81829) CVE-2026-81829 smallrye-jwt: quarkus-smallrye-jwt: smallrye-jwt: Unauthenticated same-origin SSRF via unsanitized JWT kid header in AwsAlbKeyResolver

https://bugzilla.redhat.com/show_bug.cgi?id=2524980
redhat Patch Available

CVE-2026-81829 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-81829

Vendor Advisories for CVE-2026-81829(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 55× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

  1. 2026-10-05 06:36 UTCEG score recompute
  2. 2026-10-05 06:36 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 05:44 UTCEG score recompute
  5. 2026-10-04 05:44 UTCGHSA enrichment
  6. 2026-10-03 14:26 UTCEPSS rescore
  7. 2026-10-03 04:52 UTCEG score recompute
  8. 2026-10-03 04:52 UTCGHSA enrichment
  9. 2026-10-02 17:57 UTCEPSS rescore
  10. 2026-10-02 03:59 UTCEG score recompute
  11. 2026-10-02 03:59 UTCGHSA enrichment
  12. 2026-10-01 19:50 UTCEPSS rescore
  13. 2026-10-01 03:00 UTCEG score recompute
  14. 2026-10-01 02:59 UTCGHSA enrichment
  15. 2026-09-30 15:04 UTCEPSS rescore
  16. 2026-09-30 02:06 UTCEG score recompute
  17. 2026-09-30 02:06 UTCGHSA enrichment
  18. 2026-09-29 01:14 UTCEG score recompute
  19. 2026-09-29 01:14 UTCGHSA enrichment
  20. 2026-09-28 13:52 UTCEPSS rescore
  21. 2026-09-28 00:22 UTCEG score recompute
  22. 2026-09-28 00:22 UTCGHSA enrichment
  23. 2026-09-27 13:48 UTCEPSS rescore
  24. 2026-09-26 23:30 UTCEG score recompute
  25. 2026-09-26 23:29 UTCGHSA enrichment
Show 30 more
  1. 2026-09-26 15:59 UTCEPSS rescore
  2. 2026-09-25 22:33 UTCGHSA enrichment
  3. 2026-09-24 21:30 UTCEG score recompute
  4. 2026-09-24 21:30 UTCGHSA enrichment
  5. 2026-09-24 14:04 UTCEPSS rescore
  6. 2026-09-23 20:11 UTCEG score recompute
  7. 2026-09-23 20:11 UTCGHSA enrichment
  8. 2026-09-23 17:54 UTCEPSS rescore
  9. 2026-09-22 19:20 UTCEG score recompute
  10. 2026-09-22 19:20 UTCGHSA enrichment
  11. 2026-09-22 16:01 UTCEPSS rescore
  12. 2026-09-21 21:09 UTCEPSS rescore
  13. 2026-09-21 18:27 UTCEG score recompute
  14. 2026-09-21 18:27 UTCGHSA enrichment
  15. 2026-09-21 17:31 UTCEG score recompute
  16. 2026-09-21 17:30 UTCGHSA enrichment
  17. 2026-09-20 20:53 UTCEG score recompute
  18. 2026-09-20 20:53 UTCGHSA enrichment
  19. 2026-09-20 20:16 UTCEPSS rescore
  20. 2026-09-19 20:01 UTCEG score recompute
  21. 2026-09-19 20:01 UTCGHSA enrichment
  22. 2026-09-18 19:28 UTCEPSS rescore
  23. 2026-09-18 19:09 UTCGHSA enrichment
  24. 2026-09-18 18:50 UTCGHSA enrichment
  25. 2026-09-17 17:58 UTCEG score recompute
  26. 2026-09-17 17:58 UTCGHSA enrichment
  27. 2026-09-17 15:49 UTCEG score recompute
  28. 2026-09-17 15:49 UTCGHSA enrichment
  29. 2026-09-17 14:19 UTCEG score recompute
  30. 2026-09-17 14:19 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81829?
CVE-2026-81829 is a medium vulnerability published on September 17, 2026. A flaw was found in SmallRye JWT's AwsAlbKeyResolver, which is used by applications to verify JSON Web Tokens signed by AWS Application Load Balancers. When the AWS_ALB key provider is configured, the resolver constructs the key-fetch URL by directly concatenating the attacker-controlled kid header…
When was CVE-2026-81829 disclosed?
CVE-2026-81829 was first published on September 17, 2026, with the most recent update on September 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81829 actively exploited?
CVE-2026-81829 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-81829?
CVE-2026-81829 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-81829?
A fix for CVE-2026-81829 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-81829 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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