CVE-2026-71557

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 72% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: None knownExposed: 0

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

go-git is an extensible git implementation library written in pure Go. Prior to 5.19.2 and 6.0.0-alpha.5, reference names are not sanitized before being used to construct on-disk paths under the reference storage directory, so a maliciously crafted reference name (for example containing directory-traversal sequences) can cause go-git to write files outside the intended reference storage directory. Versions 5.19.2 and 6.0.0-alpha.5 fix the issue.

CVSS v3
6.3
EG Score
6.3(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity63% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
28%
KEV
Not listed

Published

August 7, 2026

Last Modified

August 7, 2026

Advisory Details (7)

Auto-updated Aug 7, 2026
Patch available. Sources: github, github_pr, github_commit, github_release.
github_release Patch Available

v6.0.0-alpha.5

Patch available: go-git/go-git v6.0.0-alpha.5 (pre-release)

https://github.com/go-git/go-git/releases/tag/v6.0.0-alpha.5
github_release Patch Available

v5.19.2

Patch available: go-git/go-git v5.19.2

https://github.com/go-git/go-git/releases/tag/v5.19.2
github_commit Patch Available

commit da9f7d8a0e98 (go-git/go-git)

Patch available: go-git/go-git v6.0.0-alpha.5 (contains commit da9f7d8a0e98)

https://github.com/go-git/go-git/commit/da9f7d8a0e98b475600177348d6ece384a370f36
github_commit Patch Available

commit 4a0e66d555de (go-git/go-git)

Patch available: go-git/go-git v5.19.2 (contains commit 4a0e66d555de)

https://github.com/go-git/go-git/commit/4a0e66d555de5f9a30c31e2df64f445f42bd01e7
github_pr Patch Available

storage: dotgit, reject path traversal in reference names

Patch available: go-git/go-git v5.19.2 (PR #2254 merged 2026-07-17)

https://github.com/go-git/go-git/pull/2254
github_pr Patch Available

storage: dotgit, reject path traversal in reference names

Patch available: go-git/go-git v6.0.0-alpha.5 (PR #2247 merged 2026-07-15)

https://github.com/go-git/go-git/pull/2247
github Patch Available

Malicious reference names may modify files outside the reference storage · Advisory · go-git/go-git · GitHub

https://github.com/go-git/go-git/security/advisories/GHSA-qgq7-7hm3-q39j

Vendor Advisories for CVE-2026-71557(2)

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

Affected Packages

(6 across 4 ecosystems)
Debian:14(2)
PackageVulnerable rangeFixed inDependents
golang-github-go-git-go-git5.14.0-1, 5.16.2-1, 5.17.0-1, 5.17.1-1, 5.19.1-1——
golang-github-go-git-go-git-v66.0.0~alpha.4-1 ... 6~git20260305.2083cf94-3 (7 versions)——
Go(2)
PackageVulnerable rangeFixed inDependents
github.com/go-git/go-git/v5—5.19.2—
github.com/go-git/go-git/v6—6.0.0-alpha.5—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
golang-github-go-git-go-git5.11.0-1 ... 5.4.2-4 (13 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
golang-github-go-git-go-git5.14.0-1, 5.16.2-1, 5.17.0-1, 5.17.1-1, 5.19.1-1——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 15× in last 7d / 30× 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. 2026-08-21 08:51 UTCEG score recompute
  2. 2026-08-20 22:56 UTCEPSS rescore
  3. 2026-08-20 11:07 UTCEG score recompute
  4. 2026-08-19 17:04 UTCEPSS rescore
  5. 2026-08-18 15:40 UTCEG score recompute
  6. 2026-08-18 13:49 UTCEPSS rescore
  7. 2026-08-18 13:49 UTCEPSS rescore
  8. 2026-08-17 17:07 UTCEG score recompute
  9. 2026-08-17 13:47 UTCEPSS rescore
  10. 2026-08-16 19:26 UTCEG score recompute
  11. 2026-08-16 14:56 UTCEPSS rescore
  12. 2026-08-16 14:56 UTCEPSS rescore
  13. 2026-08-16 02:15 UTCEPSS rescore
  14. 2026-08-15 21:42 UTCEG score recompute
  15. 2026-08-15 01:31 UTCEPSS rescore
  16. 2026-08-14 02:18 UTCEG score recompute
  17. 2026-08-13 22:00 UTCEPSS rescore
  18. 2026-08-13 04:37 UTCEG score recompute
  19. 2026-08-12 13:51 UTCEPSS rescore
  20. 2026-08-12 06:55 UTCEG score recompute
  21. 2026-08-11 09:13 UTCEG score recompute
  22. 2026-08-11 00:00 UTCEPSS rescore
  23. 2026-08-09 13:49 UTCEG score recompute
  24. 2026-08-09 13:47 UTCEPSS rescore
  25. 2026-08-08 16:37 UTCEPSS rescore
Show 5 more
  1. 2026-08-07 18:26 UTCEG score recompute
  2. 2026-08-07 18:07 UTCEG score recompute
  3. 2026-08-07 17:25 UTCEG score recompute
  4. 2026-08-07 16:47 UTCEG score recompute
  5. 2026-08-07 16:47 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-71557?
CVE-2026-71557 is a medium vulnerability published on August 7, 2026. go-git is an extensible git implementation library written in pure Go. Prior to 5.19.2 and 6.0.0-alpha.5, reference names are not sanitized before being used to construct on-disk paths under the reference storage directory, so a maliciously crafted reference name (for example containing…
When was CVE-2026-71557 disclosed?
CVE-2026-71557 was first published in the National Vulnerability Database on August 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-71557 actively exploited?
CVE-2026-71557 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 71.8% of all scored CVEs.
What is the CVSS score of CVE-2026-71557?
CVE-2026-71557 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-71557?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-71557, 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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