Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-102827

CVE-2026-102827CRITICAL

steveukx git-js — simple-git: unsafe-operations plugin bypass via git long-option abbreviation (--receive-p/--exe) -> command execution (residual of CVE-2026-28291)

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  H    9.8   .0040   32.1     —

AFFECTED
  Product  Versions   Fixed
  git-js   < 4.0.0 –  —

TIMELINE
  Sep 29  Reserved by GitHub_M
  Sep 29  Published (CNA: GitHub_M)
  Oct 8   EXPLOIT PUBLISHED — CVE-2026-102827 (steveukx git-js). Public exploit reference added.
  Oct 8   RESCORED — CVE-2026-102827 (steveukx git-js). CVSS 8.1 → 9.8 (NVD).

CWE-77, CWE-88 · CNA: GitHub_M · CVSS v3.1 · 4 references · NVD status: Analyzed

Description

simple-git, an interface for running git commands in any node.js application, enables applications to execute Git operations from JavaScript. Prior to 4.0.0, the default blockUnsafeOperationsPlugin compares parsed option names with literal dangerous option spellings while Git accepts unambiguous long-option abbreviations. Attacker-influenced push arguments such as abbreviated --receive-pack or --exec forms can therefore bypass detectVulnerableFlags, reach git push against a local or file remote or an attacker-influenced receive-pack target, and cause Git to invoke an attacker-selected command in consumers that expose those arguments. The clone-side abbreviation handling does not protect the push path. This issue is fixed in 4.0.0.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
September 29, 2026	Reserved	Reserved by GitHub_M
September 29, 2026	Published	Published (CNA: GitHub_M)
October 8, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-102827 (steveukx git-js). Public exploit reference added.
October 8, 2026	RESCORED	RESCORED — CVE-2026-102827 (steveukx git-js). CVSS 8.1 → 9.8 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
steveukx	git-js	—	< 4.0.0	—

Weaknesses

CWE-77 · CWE-88

References (4)

https://github.com/steveukx/git-js/commit/98864c678444d9336357c844efa4fd5a7984c0d7 [Patch]
https://github.com/steveukx/git-js/pull/1193 [Patch]
https://github.com/steveukx/git-js/releases/tag/simple-git@4.0.0 [Release Notes]
https://github.com/steveukx/git-js/security/advisories/GHSA-858h-whjf-mvg5 [Exploit, Mitigation, Vendor Advisory]

Authoritative record: CVE-2026-102827 at cve.org

Vendors: steveukx

Weaknesses: CWE-77 · CWE-88

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-102827 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.