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vLLM: ReDoS via structured_outputs.regex compiled without timeout in xgrammar and outlines backends
vLLM: ReDoS via structured_outputs.regex compiled without timeout in xgrammar and outlines backends
Affected packages
- vllm— before 0.24.0
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://github.com/vllm-project/vllm/security/advisories/GHSA-rwxx-mrjm-wc2m
- https://nvd.nist.gov/vuln/detail/CVE-2026-55574
- https://github.com/vllm-project/vllm/pull/45118
- https://github.com/vllm-project/vllm/commit/2b3006076c5e9bc4cda9e03e3641388de3c5c286
- https://github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2026-2304.yaml
- https://github.com/vllm-project/vllm
Structured record: https://osv.dev/vulnerability/GHSA-rwxx-mrjm-wc2m
Recommended response stack
Snyk — Scan your dependencies in CI and fix this vulnerability.→Socket — Detect malicious and compromised packages before they ship.→
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