CVE-2026-14742CWE-327CWE-328

langchain-ai langgraph Task Result Cache _cache.py _freeze weak hash

Low · published July 5, 2026

CVSS v4.0
2.3
EPSS
0%
Percentile
14.1
In the wild
Unconfirmed
What it is

A vulnerability was determined in langchain-ai langgraph up to 1.2.4. The affected element is the function _freeze of the file libs/langgraph/langgraph/_internal/_cache.py of the component Task Result Cache. This manipulation of the argument default_cache_key causes use of weak hash. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is described as difficult. The exploit has been publicly disclosed and may be utilized. The pull request to fix this issue awaits acceptance.

The record
Technical detail
CVSS v4.0
2.3 · LOW
Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
EPSS
0.00233 · 14.1th percentile
Weaknesses
CWE-327 · Use of a Broken or Risky Cryptographic Algorithm; CWE-328 · Use of Weak Hash
Published
2026-07-05T10:45Z
EPSS history
Timeline
  • 05 JUL 10:45Z
    langchain-ai langgraph Task Result Cache _cache.py _freeze weak hash
    cvelistv5