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CVE-2026-73619VulnerabilityPublished Updated

nbdime · GitPython: Incomplete unsafe_git_archive_options denylist omits --add-file / --add-virtual-file, enabling arbitrary

Affects nbdimeSource GCVE Database

0
Authoritative record:CVE-2026-73619· High 7.1

Not known to be exploited · CVSS 7.1 High : upgrade to 4.0.4_6 soon.

Data as of 26 Oct 2026, 17:29 UTC

CVSS 4.0 base score
7.1High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 35% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.0.4_6
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade nbdime to 4.0.4_6.

Affected software

ProductAffectedFixed in
Homebrewnbdimepkg:brew/nbdimeOther threatsAffected
  • >=1.1.0 <4.0.4_6
Fixed in
  • 4.0.4_6

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available in GitPython version 4.0.4_6. Users should upgrade to this version or later. The vendor recommends either adopting a strict allowlist of safe options for Repo.archive() or extending the denylist to include --add-file and --add-virtual-file options, blocking any option that takes a filesystem path or URL. Until patched, avoid passing untrusted input to Repo.archive() options.

Description

GitPython's Repo.archive() method uses a denylist to block unsafe git archive options that could lead to arbitrary command execution or file writes. However, this denylist is incomplete and omits the --add-file and --add-virtual-file options, which allow an attacker to read arbitrary files from the filesystem and inject attacker-controlled content into archives. This flaw enables arbitrary file read at the privileges of the process using GitPython. A fix is available in version 4.0.4_6.

References

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