zlib vulnerabilities and fixes

CVEs that mention zlib, ranked by priority. 6 tracked.

zlib has 6 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 3. Most recent: 2026-10-23. Highest priority: CVE-2026-102560 (score 49/100).

• CVE-2026-102560 HIGH 8.6 UPGRADE MITIGATE A flaw was found in libsoup
• CVE-2026-93471 HIGH 8.7 Improper Handling of Highly Compressed Data (Data Amplification) in esaml_binding in dropbox esaml allows an u
• CVE-2026-114102 HIGH 7.5 adm-zip before 0.6.1 contains a denial of service vulnerability that allows unauthenticated attackers to crash
• CVE-2026-106070 LOW 3.7 A flaw in the Node.js `zlib.ZipFile` API can cause it to return bytes that do not belong to the requested entr
• CVE-2026-58045 MEDIUM 6.2 A flaw in Node.js allows a spoofed `TypedArray` `byteLength` to trigger a reachable assertion in the synchrono
• CVE-2026-78066 HIGH n/a Resource exhaustion in Apache bRPC (version < 1.18.0) on all platforms: multiple parsers that accept wire-cont

FAQ

How do I fix zlib vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is zlib being exploited right now?

None of the tracked zlib CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which zlib CVE should I patch first?

CVE-2026-102560 currently ranks highest (49/100): A flaw was found in libsoup.

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