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CVE-2026-115508high7.1

Crawl4AI 0.7.0 before 0.9.5 ReDoS via /crawl Regex Fields

Impact

Crawl4AI versions before 0.9.5 have a regular expression complexity vulnerability, allowing authenticated API clients to submit patterns that can freeze the server. The weakness is in the Docker API server's /crawl request bodies. Authenticated access is required to exploit this vulnerability.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

unclecode · VulnCheck

crawl4ai

2 ranges
VulnCheck version evidence

Package identity

pkg:pypi/crawl4aiExplore crawl4ai →

Identity supplied by VulnCheck. Version matching requires compatible range evidence.

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0.7.0 → before 0.9.5

semver versions

unaffected

0.9.5

semver versions

unknown

Other versions: unaffected

Original source description

Crawl4AI 0.7.0 before 0.9.5 contains an inefficient regular expression complexity vulnerability in the Docker API server that allows authenticated API clients to supply unbounded regular expressions in /crawl request bodies. Attackers can submit catastrophic-backtracking patterns via RegexExtractionStrategy.custom, RegexChunking.patterns or JsonCss, JsonXPath and JsonLxml schema regex fields against a crafted page to freeze the entire server, including /health.

Inside the record

Evidence available

Package identity
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-115508

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-1333 ↗

Inefficient Regular Expression Complexity

VulnCheck

Related →
Contributing organizations · 2
VulnCheck

Assigning organization

2026-10-22
CISA-ADP

Additional data publisher

2026-10-29

What changed

Follow changes
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Large field values are marked as truncated previews. Original source snapshots remain retained.

References

5 sources
github.com/unclecode/crawl4ai/security/advisories/GHSA-j843-8p47-rhxp
vendor-advisoryVulnCheck · CISA-ADP
github.com/unclecode/crawl4ai/commit/8aea2006e2cdb96a185e50b20633fc323dff6429
patchVulnCheck
github.com/unclecode/crawl4ai/releases/tag/v0.9.5
release-notesVulnCheck
github.com/unclecode/crawl4ai
productVulnCheck
www.vulncheck.com/advisories/crawl4ai-0.7.0-before-0.9.5-redos-via-crawl-regex-fields
third-party-advisoryVulnCheck