CVE-2026-34966

HIGHPre-NVD 7.67.6—
EchelonGraph scoreMEDIUM confidence

Score 7.6 from GitHub Security Advisory (severity: HIGH) published 2026-08-05. A secondary CVSS source baseline 7.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
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: 0.4%CVSS: 7.6Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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
7.6HIGHmedium confidence
EG Risk
50
EG Risk 50/100CISA 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
Severity76% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
30th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (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

August 5, 2026

Last Modified

September 24, 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 rangeFix by version rangeDependents
code.gitea.io/gitea—
  • every version up to 1.27.0: fixed in 1.27.0
—
gitea.dev—
  • every version up to 1.27.0: fixed in 1.27.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 90× 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 208 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

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 on August 5, 2026, with the most recent update on September 24, 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 0.4% probability of exploitation in the next 30 days (30th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-34966?
CVE-2026-34966 has a CVSS base score of 7.6 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-34966?
A fix for CVE-2026-34966 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-34966 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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