Signal is active with 3 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
jq is a command-line JSON processor. Before commit 0c7d133c3c7e37c00b6d46b658a02244fdd3c784, jq used MurmurHash3 with a hardcoded, publicly visible seed (0x432A9843) for all JSON object hash table operations, which allowed an attacker to precompute key collisions offline. By supplying a crafted JSON object (~100 KB) where all keys hashed to the same bucket, hash table lookups degraded from O(1) to O(n), turning any jq expression into an O(n²) operation and causing significant CPU exhaustion. This affected common jq use cases such as CI/CD pipelines, web services, and data processing scripts, and was far more practical to exploit than existing heap overflow issues since it required only a small payload. This issue has been patched in commit 0c7d133c3c7e37c00b6d46b658a02244fdd3c784.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
⚡ New CVE Alert: CVE-2026-40164 📊 Severity: 7.5 🚨 Risk Level: High 🧩 Affects: Multiple / Unspecified Products Reference: https://nvd.nist.gov/vuln/detail/CVE-2026-40164 #CVE-2026-40164 #CVE #High #CyberSecurity #InfoSec https://t.co/I4QzJBGcog
Post summary
A new CVE-2026-40164 vulnerability with a severity score of 7.5 has been announced, affecting unspecified products; no PoC, exploit, active use, or patch details were disclosed.
CVE-2026-40164 Hash Collision Denial of Service in jq via Predictable MurmurHash... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-40164 Vulnerability Alert Subscriptions: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=1
Post summary
The text announces CVE-2026-40164, describing a DoS vulnerability in jq caused by hash collision through Predictable MurmurHash, with no PoC, exploit, or patch information disclosed.
CVE-2026-40164 jq is a command-line JSON processor. Before commit 0c7d133c3c7e37c00b6d46b658a02244fdd3c784, jq used MurmurHash3 with a hardcoded, publicly visible seed (0x432A9843) … https://www.cve.org/CVERecord?id=CVE-2026-40164
Post summary
The post reports that jq previously used a hardcoded MurmurHash3 seed, marking a disclosure of a vulnerability; it does not provide PoC, exploit, patch, or evidence of active exploitation.