peter bassill · operator
$ cve CVE-2017-17458 JSON

CVE-2017-17458

9.8
CRITICAL · CVSS 3.0 · EPSS 6.3% (pctl 93)

In your normal cycle

Critical by CVSS (9.8), but no sign of active exploitation.

Description

In Mercurial before 4.4.1, it is possible that a specially malformed repository can cause Git subrepositories to run arbitrary code in the form of a .git/hooks/post-update script checked into the repository. Typical use of Mercurial prevents construction of such repositories, but they can be created programmatically.

Scoring

CVSS9.8 (CRITICAL, v3.0)
VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS6.33% — more likely to be exploited than 93% of all CVEs
WeaknessCWE-78
On CISA KEVno
Public exploitnone known
Published2017-12-07
Last modified2026-06-17

Affected (2)

VendorProduct
debiandebian linux
mercurialmercurial

References

→ the Explorer  ·  watch your stack  ·  NVD