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CVE-2026-19863VulnerabilityPublished

Solr: unauthenticated client may access certain protected resources when using EthereumAuthenticator if the request

Affects solrSource GCVE Database

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Authoritative record:CVE-2026-19863· Critical 9.3

Not known to be exploited · CVSS 9.3 Critical : upgrade to 10.0.0-r14 as a priority.

Data as of 11 Nov 2026, 04:18 UTC

CVSS 4.0 base score
9.3Critical
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 10.0.0-r14
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Oct 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 10 Nov 2026.

What to do

Upgrade solr to 10.0.0-r14.

Affected software

ProductAffectedFixed in
CleanStartsolrpkg:apk/cleanstart/solrOther threatsAffected
  • <10.0.0-r14
Fixed in
  • 10.0.0-r14

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

AI-suggested

Upgrade Solr to version 10.0.0-r14 or later, where this vulnerability is fixed. No other mitigation is indicated or required by the vendor advisory.

Description

A critical security vulnerability in Solr allows unauthenticated clients to access certain protected resources when using the EthereumAuthenticator, if the request path contains the configured login path. This issue affects Solr versions prior to 10.0.0-r14. The vulnerability has a high CVSS 4.0 score of 9.3, indicating severe impact. A fix is available in version 10.0.0-r14.

References

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