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Anthropic's OSS Scanner Flags 29,000 Vulnerabilities, Including Critical Curl Flaw

Anthropic's OSS Scanner Flags 29,000 Vulnerabilities, Including Critical Curl Flaw

First seen 10 Oct 2026, 09:33 UTC • •
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ThreatCluster AI
ThreatCluster •October 11, 2026 at 03:36 UTC
  • •Anthropic's OSS Scanner flagged over 29,000 potential vulnerabilities since November 2025.
  • •A critical flaw in the curl project was identified, described as one of the worst in years.
  • •The scanner operates without human review, leading to potential inaccuracies in vulnerability reports.

On October 8, 2026, Anthropic launched its free OSS Scanner, which has identified 29,439 potential vulnerabilities in open-source software since November 2025. Among these, a serious flaw in the curl project was highlighted by maintainer Daniel Stenberg as one of the worst in years. The scanner operates without human review, meaning reports may contain inaccuracies. As of October 2, 2026, external security firms had reviewed 6,123 of the flagged vulnerabilities, resulting in 584 security advisories. The initiative aims to enhance security for critical infrastructure operators, including partners like CrowdStrike and Palo Alto Networks. However, nearly 5,000 unverified reports were sent directly to maintainers, raising concerns about the reliability of the findings. The program reflects lessons learned from previous efforts that failed to reduce cyber risk effectively.

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Timeline

2026-10-02
6,123 vulnerabilities reviewed
External security firms reviewed 6,123 of the flagged vulnerabilities, resulting in 584 advisories.
Ad-Hoc-News.De
2026-10-08
Anthropic launches OSS Scanner
Anthropic's free OSS Scanner begins operation, flagging vulnerabilities without human review.
Ad-Hoc-News.De
2026-10-09
Curl vulnerability disclosed
Anthropic's OSS Scanner uncovers a serious vulnerability in the curl project, described as critical by its maintainer.
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Common questions

What vulnerabilities were flagged?
Anthropic's OSS Scanner flagged 29,439 potential vulnerabilities, including a critical flaw in curl.
How are the reports generated?
The scanner generates reports automatically without human review, which may lead to inaccuracies.
What should maintainers do with unverified reports?
Maintainers need to review the reports carefully, as nearly 5,000 unverified findings were sent directly to them.