CVE-2026-27780

CRITICALPre-NVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-03. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 9.8Exploit: None knownExposed: 0

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

Gitea versions before 1.26.0 do not fail closed on bufio.Scanner errors while processing pre-receive hook input, allowing oversized input to bypass branch-protection checks.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
59(Track)
EG Risk 59/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
49%
KEV
Not listed

Published

July 3, 2026

Last Modified

July 6, 2026

Advisory Details (3)

Auto-updated Sep 7, 2026
Patch available. Sources: github_pr, github_release.
github_release Patch Available

v1.26.0

Patch available: go-gitea/gitea v1.26.0

https://github.com/go-gitea/gitea/releases/tag/v1.26.0
github_pr

Catch scanner error when possible to avoid bypass

Fix merged in go-gitea/gitea PR #36963 on 2026-03-24 — awaiting tagged release

https://github.com/go-gitea/gitea/pull/36963
generic

Gitea 1.26.0 is released | Gitea Blog

https://blog.gitea.com/release-of-1.26.0/

Vendor Advisories for CVE-2026-27780(1)

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

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
code.gitea.io/gitea—1.26.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 122× 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 365 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-27780?
CVE-2026-27780 is a critical vulnerability published on July 3, 2026. Gitea versions before 1.26.0 do not fail closed on bufio.Scanner errors while processing pre-receive hook input, allowing oversized input to bypass branch-protection checks.
When was CVE-2026-27780 disclosed?
CVE-2026-27780 was first published in the National Vulnerability Database on July 3, 2026, with the most recent update on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-27780 actively exploited?
CVE-2026-27780 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 51.5% of all scored CVEs.
What is the CVSS score of CVE-2026-27780?
CVE-2026-27780 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-27780?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27780, 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.

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