CVE-2026-34966

HIGHPre-NVD 7.67.6—
EchelonGraph scoreMEDIUM confidence

Score 7.6 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. the CNA's CVSS baseline 7.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:vulncheck, epss, ghsa
Trending — 3 sources updated this weekElevated
7.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.6Exploit: Elevated riskExposed: 0

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

Gitea prior to 1.27.0 contains a server-side request forgery vulnerability that allows authenticated attackers to bypass SSRF protections by exploiting HTTP fetch operations in migration and OAuth avatar code paths that use Go's default http.Get without a custom DialContext. Attackers can supply arbitrary URLs through release asset download URLs, pull-request patch URLs, or OAuth avatar endpoints to reach internal services, cloud instance-metadata endpoints, or read local files such as the application configuration containing database credentials and signing secrets, with exfiltrated content persisted as migration release assets for later retrieval.

CVSS v3
7.6
EG Score
7.6(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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
Severity76% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 14, 2026

Advisory Details (4)

Auto-updated Aug 5, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit.
generic

Gitea prior to 1.27.0 SSRF via Migration URI Fetch Bypass | Advisories | VulnCheck

https://www.vulncheck.com/advisories/gitea-prior-to-ssrf-via-migration-uri-fetch-bypass
github_commit

commit b969123b7fac (go-gitea/gitea)

Fix landed in go-gitea/gitea commit b969123b7fac — awaiting tagged release

https://github.com/go-gitea/gitea/commit/b969123b7fac51c88daab5cb64e5b2f4abd53288
github Patch Available🟡 PoC Available

SSRF via Migration Asset Downloads Bypasses hostmatcher — Reads Internal Files and Cloud Metadata · Advisory · go-gitea/gitea · GitHub

https://github.com/go-gitea/gitea/security/advisories/GHSA-2wm4-vwp6-v7xc
generic

GitHub - go-gitea/gitea: Git with a cup of tea! Painless self-hosted all-in-one software development service, including Git hosting, code review, team collaboration, package registry and CI/CD · GitHub

https://github.com/go-gitea/gitea

Vendor Advisories for CVE-2026-34966(1)

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

Affected Packages

(2 across 1 ecosystem)
Go(2)
PackageVulnerable rangeFixed inDependents
code.gitea.io/gitea—1.27.0—
gitea.dev—1.27.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 27× in last 7d / 104× 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.

Showing the most recent 100 of 167 total refreshes for this CVE.

  1. 2026-09-19 03:20 UTCEG score recompute
  2. 2026-09-19 03:20 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-18 15:18 UTCGHSA enrichment
  6. 2026-09-18 03:34 UTCEG score recompute
  7. 2026-09-18 03:34 UTCGHSA enrichment
  8. 2026-09-17 19:30 UTCEPSS rescore
  9. 2026-09-17 15:49 UTCGHSA enrichment
  10. 2026-09-17 01:04 UTCEG score recompute
  11. 2026-09-17 01:04 UTCGHSA enrichment
  12. 2026-09-16 14:08 UTCEPSS rescore
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-16 05:12 UTCGHSA enrichment
  15. 2026-09-15 16:14 UTCGHSA enrichment
  16. 2026-09-15 04:30 UTCEG score recompute
  17. 2026-09-15 04:30 UTCGHSA enrichment
  18. 2026-09-15 03:11 UTCEPSS rescore
  19. 2026-09-14 16:43 UTCGHSA enrichment
  20. 2026-09-14 04:59 UTCGHSA enrichment
  21. 2026-09-13 17:15 UTCEG score recompute
  22. 2026-09-13 17:15 UTCGHSA enrichment
  23. 2026-09-13 16:47 UTCEPSS rescore
  24. 2026-09-13 05:27 UTCGHSA enrichment
  25. 2026-09-12 17:43 UTCEG score recompute
Show 75 more
  1. 2026-09-12 17:43 UTCGHSA enrichment
  2. 2026-09-12 15:01 UTCEPSS rescore
  3. 2026-09-12 05:59 UTCGHSA enrichment
  4. 2026-09-11 18:12 UTCEG score recompute
  5. 2026-09-11 18:12 UTCGHSA enrichment
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-11 09:37 UTCEPSS rescore
  8. 2026-09-11 06:27 UTCGHSA enrichment
  9. 2026-09-10 18:43 UTCEG score recompute
  10. 2026-09-10 18:43 UTCGHSA enrichment
  11. 2026-09-10 09:34 UTCEPSS rescore
  12. 2026-09-10 06:55 UTCGHSA enrichment
  13. 2026-09-09 19:11 UTCGHSA enrichment
  14. 2026-09-09 06:18 UTCEG score recompute
  15. 2026-09-09 06:18 UTCGHSA enrichment
  16. 2026-09-08 22:00 UTCEPSS rescore
  17. 2026-09-08 07:58 UTCGHSA enrichment
  18. 2026-09-07 18:10 UTCGHSA enrichment
  19. 2026-09-06 18:13 UTCEG score recompute
  20. 2026-09-06 18:13 UTCGHSA enrichment
  21. 2026-09-06 13:47 UTCEPSS rescore
  22. 2026-09-06 06:21 UTCGHSA enrichment
  23. 2026-09-05 18:24 UTCEG score recompute
  24. 2026-09-05 18:24 UTCGHSA enrichment
  25. 2026-09-05 03:44 UTCEG score recompute
  26. 2026-09-05 03:44 UTCGHSA enrichment
  27. 2026-09-04 09:26 UTCEG score recompute
  28. 2026-09-04 09:26 UTCGHSA enrichment
  29. 2026-09-04 05:06 UTCEPSS rescore
  30. 2026-09-03 19:14 UTCGHSA enrichment
  31. 2026-09-03 06:38 UTCEG score recompute
  32. 2026-09-03 06:37 UTCGHSA enrichment
  33. 2026-09-02 14:12 UTCEPSS rescore
  34. 2026-09-02 07:25 UTCGHSA enrichment
  35. 2026-09-01 18:59 UTCEG score recompute
  36. 2026-09-01 18:59 UTCGHSA enrichment
  37. 2026-09-01 13:53 UTCEPSS rescore
  38. 2026-08-31 22:45 UTCGHSA enrichment
  39. 2026-08-30 21:29 UTCEG score recompute
  40. 2026-08-30 21:29 UTCGHSA enrichment
  41. 2026-08-30 19:17 UTCEPSS rescore
  42. 2026-08-30 09:45 UTCEG score recompute
  43. 2026-08-30 09:45 UTCGHSA enrichment
  44. 2026-08-30 01:22 UTCEPSS rescore
  45. 2026-08-29 21:17 UTCEG score recompute
  46. 2026-08-29 21:16 UTCGHSA enrichment
  47. 2026-08-28 21:41 UTCEPSS rescore
  48. 2026-08-28 12:12 UTCGHSA enrichment
  49. 2026-08-27 23:44 UTCEG score recompute
  50. 2026-08-27 23:44 UTCGHSA enrichment
  51. 2026-08-27 14:25 UTCEPSS rescore
  52. 2026-08-27 11:45 UTCGHSA enrichment
  53. 2026-08-27 00:01 UTCEG score recompute
  54. 2026-08-27 00:01 UTCGHSA enrichment
  55. 2026-08-26 14:46 UTCEPSS rescore
  56. 2026-08-26 12:17 UTCGHSA enrichment
  57. 2026-08-26 00:31 UTCEG score recompute
  58. 2026-08-26 00:31 UTCGHSA enrichment
  59. 2026-08-25 13:49 UTCEPSS rescore
  60. 2026-08-25 12:47 UTCGHSA enrichment
  61. 2026-08-25 01:02 UTCEG score recompute
  62. 2026-08-25 01:02 UTCGHSA enrichment
  63. 2026-08-24 13:18 UTCEG score recompute
  64. 2026-08-24 13:18 UTCGHSA enrichment
  65. 2026-08-24 01:33 UTCGHSA enrichment
  66. 2026-08-23 13:47 UTCGHSA enrichment
  67. 2026-08-23 02:03 UTCEG score recompute
  68. 2026-08-23 02:03 UTCGHSA enrichment
  69. 2026-08-23 00:19 UTCEPSS rescore
  70. 2026-08-22 14:19 UTCGHSA enrichment
  71. 2026-08-22 02:22 UTCEG score recompute
  72. 2026-08-22 02:22 UTCGHSA enrichment
  73. 2026-08-22 02:21 UTCGHSA enrichment
  74. 2026-08-21 23:49 UTCEPSS rescore
  75. 2026-08-21 14:26 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-34966?
CVE-2026-34966 is a high vulnerability published on August 5, 2026. Gitea prior to 1.27.0 contains a server-side request forgery vulnerability that allows authenticated attackers to bypass SSRF protections by exploiting HTTP fetch operations in migration and OAuth avatar code paths that use Go's default http.Get without a custom DialContext. Attackers can supply…
When was CVE-2026-34966 disclosed?
CVE-2026-34966 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-34966 actively exploited?
CVE-2026-34966 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 74.7% of all scored CVEs.
What is the CVSS score of CVE-2026-34966?
CVE-2026-34966 has a CVSS v4.0 base score of 7.6 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-34966?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-34966, 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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