CVE-2026-14742
langchain-ai langgraph Task Result Cache _cache.py _freeze weak hash
Description
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.
INFO
Published Date :
July 5, 2026, 11:16 a.m.
Last Modified :
July 6, 2026, 7:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Update langchain-ai langgraph to the fixed version.
- Review and apply the accepted pull request.
- Verify the integrity of the cache key generation.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-14742.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-14742 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-14742
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-14742 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-14742 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 06, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-14742', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-06T17:59:36.498934Z'} -
New CVE Received by [email protected]
Jul. 05, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:langchain-ai:langgraph:*:*:*:*:*:*:*:*'], 'vendor': 'langchain-ai', 'modules': ['Task Result Cache'], 'product': 'langgraph', 'versions': [{'status': 'affected', 'version': '1.2.0'}, {'status': 'affected', 'version': '1.2.1'}, {'status': 'affected', 'version': '1.2.2'}, {'status': 'affected', 'version': '1.2.3'}, {'status': 'affected', 'version': '1.2.4'}]}] Added Description 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. Added CVSS V4.0 AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N Added CVSS V2 (AV:N/AC:H/Au:S/C:P/I:N/A:N) Added CWE CWE-327 Added CWE CWE-328 Added Reference https://github.com/langchain-ai/langgraph/ Added Reference https://github.com/langchain-ai/langgraph/issues/8009 Added Reference https://github.com/langchain-ai/langgraph/pull/8069 Added Reference https://vuldb.com/cve/CVE-2026-14742 Added Reference https://vuldb.com/submit/849217 Added Reference https://vuldb.com/vuln/376328 Added Reference https://vuldb.com/vuln/376328/cti