CVE-2026-77122

MEDIUMNVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-09-02. NVD baseline CVSS 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

An authorization flaw in the REST API repository details endpoint (GET /service/rest/v1/repositories/{repositoryName}) in Sonatype Nexus Repository 3 allowed an account holding read or browse permission on a group repository to retrieve metadata for member repositories on which it held no direct permission, by requesting the endpoint directly for the member repository name. For proxy repositories, the disclosed metadata includes the configured remote URL, which may reveal internal upstream hostnames. This includes the anonymous user if it has been granted this permission; whether the anonymous user holds this permission depends on the role and permission configuration of the specific installation.

CVSS v3
4.3
EG Score
4.3(high)
EG Risk
19(Track)
EG Risk 19/100SSVC: Track

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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
18%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 22, 2026

Advisory Details (2)

Auto-updated Sep 2, 2026
Patch available.
generic Patch Available

CVE-2026-77122 Nexus Repository 3 - Authorization Bypass Exposes Member Repository Metadata - 2026-09-02 – Sonatype Support

https://support.sonatype.com/hc/en-us/articles/54637328224019/
generic

Sonatype Nexus Repository 3.96.0 Release Notes

https://help.sonatype.com/en/sonatype-nexus-repository-3-96-0-release-notes.html

Vendor Advisories for CVE-2026-77122(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 / 65× 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. 2026-09-24 14:25 UTCEG score recompute
  2. 2026-09-24 14:25 UTCGHSA enrichment
  3. 2026-09-24 14:04 UTCEPSS rescore
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 15:53 UTCEG score recompute
  6. 2026-09-23 15:53 UTCGHSA enrichment
  7. 2026-09-22 17:39 UTCEG score recompute▼ 1.00
  8. 2026-09-22 17:39 UTCGHSA enrichment
  9. 2026-09-22 17:29 UTCNVD updateCVSS v3 → 4.3
  10. 2026-09-22 16:01 UTCEPSS rescore
  11. 2026-09-21 21:09 UTCEPSS rescore
  12. 2026-09-21 19:15 UTCGHSA enrichment
  13. 2026-09-20 21:02 UTCEG score recompute
  14. 2026-09-20 21:01 UTCGHSA enrichment
  15. 2026-09-20 20:16 UTCEPSS rescore
  16. 2026-09-19 22:48 UTCEG score recompute
  17. 2026-09-19 22:48 UTCGHSA enrichment
  18. 2026-09-19 00:34 UTCEG score recompute
  19. 2026-09-19 00:34 UTCGHSA enrichment
  20. 2026-09-18 19:28 UTCEPSS rescore
  21. 2026-09-18 02:21 UTCEG score recompute
  22. 2026-09-18 02:21 UTCGHSA enrichment
  23. 2026-09-17 04:07 UTCEG score recompute
  24. 2026-09-17 04:07 UTCGHSA enrichment
  25. 2026-09-16 14:08 UTCEPSS rescore
Show 40 more
  1. 2026-09-16 05:52 UTCEG score recompute
  2. 2026-09-16 05:52 UTCGHSA enrichment
  3. 2026-09-16 05:15 UTCEPSS rescore
  4. 2026-09-15 07:39 UTCEG score recompute
  5. 2026-09-15 07:39 UTCGHSA enrichment
  6. 2026-09-15 03:12 UTCEPSS rescore
  7. 2026-09-14 09:25 UTCEG score recompute
  8. 2026-09-14 09:25 UTCGHSA enrichment
  9. 2026-09-13 11:12 UTCEG score recompute
  10. 2026-09-13 11:12 UTCGHSA enrichment
  11. 2026-09-12 15:02 UTCEPSS rescore
  12. 2026-09-12 12:58 UTCEG score recompute
  13. 2026-09-12 12:58 UTCGHSA enrichment
  14. 2026-09-11 14:53 UTCEPSS rescore
  15. 2026-09-11 14:45 UTCEG score recompute
  16. 2026-09-11 14:45 UTCGHSA enrichment
  17. 2026-09-10 16:31 UTCEG score recompute
  18. 2026-09-10 16:31 UTCGHSA enrichment
  19. 2026-09-10 09:35 UTCEPSS rescore
  20. 2026-09-09 18:18 UTCEG score recompute
  21. 2026-09-09 18:18 UTCGHSA enrichment
  22. 2026-09-08 22:01 UTCEPSS rescore
  23. 2026-09-08 20:04 UTCGHSA enrichment
  24. 2026-09-08 08:11 UTCEG score recompute
  25. 2026-09-08 08:11 UTCGHSA enrichment
  26. 2026-09-07 09:57 UTCEG score recompute
  27. 2026-09-07 09:57 UTCGHSA enrichment
  28. 2026-09-06 13:48 UTCEPSS rescore
  29. 2026-09-06 11:37 UTCEG score recompute
  30. 2026-09-06 11:36 UTCGHSA enrichment
  31. 2026-09-05 13:23 UTCGHSA enrichment
  32. 2026-09-04 15:08 UTCEG score recompute
  33. 2026-09-04 15:08 UTCGHSA enrichment
  34. 2026-09-04 05:07 UTCEPSS rescore
  35. 2026-09-03 16:52 UTCGHSA enrichment
  36. 2026-09-02 18:36 UTCEG score recompute
  37. 2026-09-02 18:36 UTCGHSA enrichment
  38. 2026-09-02 17:54 UTCEG score recompute
  39. 2026-09-02 17:23 UTCEG score recompute
  40. 2026-09-02 17:21 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-77122?
CVE-2026-77122 is a medium vulnerability published on September 2, 2026. An authorization flaw in the REST API repository details endpoint (GET /service/rest/v1/repositories/{repositoryName}) in Sonatype Nexus Repository 3 allowed an account holding read or browse permission on a group repository to retrieve metadata for member repositories on which it held no direct…
When was CVE-2026-77122 disclosed?
CVE-2026-77122 was first published in the National Vulnerability Database on September 2, 2026, with the most recent update on September 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-77122 actively exploited?
CVE-2026-77122 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 81.7% of all scored CVEs.
What is the CVSS score of CVE-2026-77122?
CVE-2026-77122 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-77122?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-77122, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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