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CVE-2026-17600VulnerabilityPublished Updated

Sonatype Nexus Repository 3 did not immediately terminate a user's active login session or revoke their cached

Source GCVE Database

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Authoritative record:CVE-2026-17600· High 8.7

Not known to be exploited · CVSS 8.7 High : upgrade to 3.95.0 soon.

Data as of 7 Nov 2026, 23:24 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.4% chance of exploitation in 30 days – higher than 38% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.95.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 8 Nov 2026.

What to do

Upgrade Nexus Repository 3 and Sonatype and Sonatype/org.sonatype.nexus.common.components:nexus-security to 3.95.0.

Affected software

ProductAffectedFixed in
SonatypeNexus Repository 3Affected
  • >=3.0.0 <3.95.0
Fixed in
  • 3.95.0
SonatypeAffected
  • >=1.1.0 <=3.3
Fixed in–
SonatypeAffected
  • >=2.6.0-01 <=3.88.0-08
Fixed in–
SonatypeAffected
  • >=3.89.0-09 <3.95.0
Fixed in
  • 3.95.0
MavenSonatype/org.sonatype.security:security-systempkg:maven/Sonatype/org.sonatype.security:security-systemOther threatsAffected
  • >=1.1.0 <=3.3
Fixed in–
MavenSonatype/org.sonatype.nexus:nexus-securitypkg:maven/Sonatype/org.sonatype.nexus:nexus-securityOther threatsAffected
  • >=2.6.0-01 <=3.88.0-08
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, administrators should consider manually terminating active sessions when user accounts are changed or removed, if possible, and monitor for unusual activity. Follow vendor advisories for updates on remediation.

Description

Sonatype Nexus Repository 3 contains a vulnerability where active user sessions are not immediately terminated or their cached permissions revoked when the user's account is deleted, deactivated, or their password changed. This allows users with active sessions to continue accessing the repository with their previous permissions until the session expires naturally. The vulnerability could enable unauthorized access to read, modify, or delete repository content after access was intended to be revoked.

References

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