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CVSS 8.0 HIGH 🔴 ACTIVELY EXPLOITED Vulnerability

CVE-2026-20896: Exploitarium coverage update: CVE-2026-20896 Gitea probing confirmed + 10 new rules added

<!-SC_OFF --><div class="md"><p>Sysdig just published telemetry confirming active probing of CVE-2026-20896 (Gitea Docker auth bypass) 13 days after disclosure. First observed attempt came fr…

8.0CVSS Score
HIGHSeverity
NOCISA KEV
VulnerabilityImpact Type

📋 Vulnerability Details

CVE IDCVE-2026-20896
Vendorreddit_cyber
Affected ProductThreat Intelligence
Vulnerability TypeVulnerability
CVSS Score8.0 (HIGH)
Actively Exploited✅ Yes
Patch StatusSee Vendor Advisory →
Reported ByCYBERDUDEBIVASH SENTINEL APEX Intelligence (via reddit_cyber)

🔬 Technical Analysis

<!-- SC_OFF --><div class="md"><p>Sysdig just published telemetry confirming active probing of CVE-2026-20896 (Gitea Docker auth bypass) 13 days after disclosure. First observed attempt came from ProtonVPN egress 159.26.98[.]241. Detection for the X-WEBAUTH-USER header injection was already live in my repo before that dropped.</p> <p>Since my last post, bikini pushed five new exploitarium entries and I’ve added coverage for all of them:</p> <p>-curl SMTP CRLF injection<br/> -NodeBB ActivityPub UID spoofing<br/> -Next.js unstable\_cache object argument collision<br/> -libarchive ZIP debuginfod size boundary bypass<br/> -Pillow ImageCms OOB write</p> <p>Repo is now 55 KQL rules across 23 product folders.

🎯 Known Indicators of Compromise

{"type":"url","value":"https://systemtwosecurity.com/share/inspiration/VNJMKFVM">https://systemtwosecurity.com/shar","confidence_score":0.82,"first_seen":"2026-07-06","source_count":1} {"type":"url","value":"https://github.com/Ethan-Andrews/Exploitarium-Detections">https://github.com/Ethan-Andrews/E","confidence_score":0.82,"first_seen":"2026-07-06","source_count":1} {"type":"url","value":"https://www.reddit.com/user/3eandrews3">","confidence_score":0.82,"first_seen":"2026-07-06","source_count":1} {"type":"url","value":"https://www.reddit.com/r/cybersecurity/comments/1up5tj5/exploitarium_coverage_update_cve202620896_gi","confidence_score":0.82,"first_seen":"2026-07-06","source_count":1} {"type":"domain","value":"systemtwosecurity.com","confidence_score":0.75,"first_seen":"2026-07-06","source_count":1} {"type":"domain","value":"www.reddit.com","confidence_score":0.75,"first_seen":"2026-07-06","source_count":1}

📚 Advisory References

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