CVE-2026-52726Disclosure

MEDIUMCVSS 7.5 · HIGH

Exploitation ongoing with high activity in latest observed window (1 mentions)

Immediate actions

  • Patch affected systems immediately
  • Assume compromise if assets are exposed

Recommended action window: Immediate (within 24h)

NVD description

Dulwich is a pure-Python implementation of the Git file formats and protocols. Starting in version 0.23.2 and prior to version 1.2.5, `dulwich.porcelain.submodule_update`, and by extension `porcelain.clone(..., recurse_submodules=True)`, materializes attacker-controlled submodule paths from a crafted upstream repository without path validation. A malicious `.gitmodules` plus a matching tree gitlink whose `path` is `.git/hooks` (or any other directory inside the parent repository's `.git` directory) causes the attacker's submodule tree contents to be written directly into the victim's `.git/hooks/` directory, preserving executable mode bits. The dropped executables are then run by any subsequent `git` or `dulwich` command that invokes the matching hook, resulting in arbitrary code execution. This is the dulwich equivalent of the upstream Git fixes for CVE-2024-32002 / CVE-2024-32004, which were never propagated into dulwich's separately implemented submodule porcelain. Version 1.2.5 patches the issue.

4.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-22

Priority

MEDIUM

Exploitation

ACTIVE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Threat summary

  • Active exploitation appears in 1 classified signals
  • Patch or workaround signal is available
  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Active exploitation reported across 1 signal
  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 3 signals
  • Disclosure: 2 classified signals
  • Peaked 1d ago at 2 mentions (2026-06-11); latest day: 1
  • 3 total mentions across 2 days

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-06-11: 2Mentions · 2026-10-02: 1Active Exploitation · 2026-06-11: 1Patch / Workaround · 2026-06-11: 1Technical Details · 2026-06-11: 2Technical Details · 2026-10-02: 106-1110-02
Signal classification2 categories
Disclosure
266.7%
Active Exploitation
133.3%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-06-112
Active Exploitation1Disclosure1
2026-10-021
Disclosure1
Full discourse3 posts
  • DailyCVE@dailycve
    Disclosure

    🔴 Dulwich, Symlink Directory Traversal, #CVE-2026-52726 (High) -DC-Oct2026-2705 https://dailycve.com/dulwich-symlink-directory-traversal-cve-2026-52726-high-dc-oct2026-2705/

    Post summary

    The post discloses CVE-2026-52726, a High-severity Symlink Directory Traversal in Dulwich, without referencing PoCs, exploits, active attacks, or remediation.

    0000041
    239 followersView on X
  • NerdieNews@NewsNerdie
    Active Exploitation

    🔴 CVE-2026-52726 is being exploited for RCE: attackers can drop malicious `.git/hooks` payloads via Dulwich's submodule path traversal flaw. This bypasses standard protections. Patch immediately to prevent full compromise. #NerdieNews #CyberSecurity #Vulnerability https://t.co/tIoG1l3nqd

    Post summary

    CVE-2026-52726 is actively exploited via a path traversal flaw in Dulwich, enabling RCE through malicious .git/hooks payloads, and a patch is urged.

    0000034
    65 followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-52726 Arbitrary Code Execution via Malicious Submodule Paths in Dulwich Below 1.2.5 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-52726

    Post summary

    The entry discloses CVE-2026-52726 as an arbitrary code execution vulnerability in Dulwich versions below 1.2.5, but does not provide PoC, exploit, active exploitation, or patch details.

    0000046
    4.0K followersView on X

Explore more