CVE-2026-82378

CRITICALPre-NVD 9.09.0—
EchelonGraph scoreHIGH confidence

Score 9.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-28. A secondary CVSS source baseline 9.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
9.0EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.0Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

Incorrect Authorization in the OAuth 1.0a authorization endpoint of Apache Roller 6.1.5 allows an unauthenticated remote attacker who learns an outstanding request token for a configured site-wide consumer to bind that token to an arbitrary user account, including an administrator, by submitting an unsigned authorization request. The endpoint derives the authorizing identity from a request-supplied value rather than the authenticated session. Only installations that configure an OAuth 1.0a site-wide consumer are affected, and exploitation requires knowledge of one of its outstanding request tokens. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which binds authorization to the logged-in session.

CVSS v3
9.0
EG Score
9.0CRITICALhigh confidence
EG Risk
41
EG Risk 41/100CISA 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
Severity90% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
EPSS PROB
0.4%
EPSS %ILE
34th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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 28, 2026

Last Modified

September 29, 2026

Advisory Details (2)

Auto-updated Sep 28, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
generic
https://lists.apache.org/thread/fq512gy70zj9yx8v4c4zm54x43wqb04b
github_pr

Use the current Roller session during OAuth authorization

Fix merged in apache/roller PR #165 on 2026-09-05 — awaiting tagged release

https://github.com/apache/roller/pull/165

Vendor Advisories for CVE-2026-82378(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 60× in last 7d / 60× 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. 2026-10-04 12:14 UTCGHSA enrichment
  2. 2026-10-04 08:32 UTCGHSA enrichment
  3. 2026-10-04 04:48 UTCGHSA enrichment
  4. 2026-10-04 01:06 UTCGHSA enrichment
  5. 2026-10-03 21:21 UTCGHSA enrichment
  6. 2026-10-03 17:37 UTCEG score recompute
  7. 2026-10-03 17:37 UTCGHSA enrichment
  8. 2026-10-03 14:26 UTCEPSS rescore
  9. 2026-10-03 13:54 UTCGHSA enrichment
  10. 2026-10-03 10:08 UTCGHSA enrichment
  11. 2026-10-03 06:25 UTCGHSA enrichment
  12. 2026-10-03 02:42 UTCGHSA enrichment
  13. 2026-10-02 22:59 UTCGHSA enrichment
  14. 2026-10-02 19:16 UTCEG score recompute
  15. 2026-10-02 19:16 UTCGHSA enrichment
  16. 2026-10-02 17:57 UTCEPSS rescore
  17. 2026-10-02 15:32 UTCGHSA enrichment
  18. 2026-10-02 11:46 UTCGHSA enrichment
  19. 2026-10-02 07:57 UTCGHSA enrichment
  20. 2026-10-02 04:13 UTCGHSA enrichment
  21. 2026-10-02 00:26 UTCGHSA enrichment
  22. 2026-10-01 20:43 UTCEG score recompute
  23. 2026-10-01 20:43 UTCGHSA enrichment
  24. 2026-10-01 19:50 UTCEPSS rescore
  25. 2026-10-01 17:00 UTCGHSA enrichment
Show 35 more
  1. 2026-10-01 12:59 UTCGHSA enrichment
  2. 2026-10-01 09:16 UTCGHSA enrichment
  3. 2026-10-01 05:33 UTCGHSA enrichment
  4. 2026-10-01 01:50 UTCGHSA enrichment
  5. 2026-09-30 22:07 UTCGHSA enrichment
  6. 2026-09-30 18:24 UTCEG score recompute
  7. 2026-09-30 18:24 UTCGHSA enrichment
  8. 2026-09-30 15:04 UTCEPSS rescore
  9. 2026-09-30 14:40 UTCGHSA enrichment
  10. 2026-09-30 10:57 UTCGHSA enrichment
  11. 2026-09-30 07:13 UTCGHSA enrichment
  12. 2026-09-30 03:29 UTCGHSA enrichment
  13. 2026-09-29 23:46 UTCGHSA enrichment
  14. 2026-09-29 16:43 UTCGHSA enrichment
  15. 2026-09-29 15:47 UTCEG score recompute
  16. 2026-09-29 15:46 UTCGHSA enrichment
  17. 2026-09-29 11:59 UTCGHSA enrichment
  18. 2026-09-29 08:14 UTCGHSA enrichment
  19. 2026-09-29 04:31 UTCEG score recompute
  20. 2026-09-29 04:31 UTCGHSA enrichment
  21. 2026-09-29 04:00 UTCEG score recompute
  22. 2026-09-29 04:00 UTCGHSA enrichment
  23. 2026-09-29 01:39 UTCGHSA enrichment
  24. 2026-09-28 21:56 UTCEG score recompute
  25. 2026-09-28 21:56 UTCGHSA enrichment
  26. 2026-09-28 18:13 UTCGHSA enrichment
  27. 2026-09-28 14:30 UTCEG score recompute
  28. 2026-09-28 14:30 UTCGHSA enrichment
  29. 2026-09-28 13:52 UTCEPSS rescore
  30. 2026-09-28 13:15 UTCGHSA enrichment
  31. 2026-09-28 09:32 UTCEG score recompute
  32. 2026-09-28 09:32 UTCGHSA enrichment
  33. 2026-09-28 08:29 UTCEG score recompute
  34. 2026-09-28 07:47 UTCEG score recompute
  35. 2026-09-28 07:47 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-82378?
CVE-2026-82378 is a critical vulnerability published on September 28, 2026. Incorrect Authorization in the OAuth 1.0a authorization endpoint of Apache Roller 6.1.5 allows an unauthenticated remote attacker who learns an outstanding request token for a configured site-wide consumer to bind that token to an arbitrary user account, including an administrator, by submitting an…
When was CVE-2026-82378 disclosed?
CVE-2026-82378 was first published on September 28, 2026, with the most recent update on September 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-82378 actively exploited?
CVE-2026-82378 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (34th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-82378?
CVE-2026-82378 has a CVSS base score of 9.0 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-82378?
An upstream fix for CVE-2026-82378 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-82378 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-82378

Explore →

Is Your Infrastructure Affected by CVE-2026-82378?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs