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CVE-2026-26987

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring tool. Versions 25.12.0 and below are vulnerable to Reflected XSS attacks via email field. This issue has been fixed in version 26.2.0.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0791e184a91c74357d2f572574f29f5b1915f9ab715a3f70896a004d07682758
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"librenms","vendor":"librenms","versions":[{"status":"affected","version":"< 26.2.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a9619601c6c9030629030435fa9241cc62482b14ef10266e3423427968f7e1bb · sha256:101b8897dcbea008… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a9619601c6c9030629030435fa9241cc62482b14ef10266e3423427968f7e1bb · sha256:101b8897dcbea008… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a9619601c6c9030629030435fa9241cc62482b14ef10266e3423427968f7e1bb · sha256:101b8897dcbea008… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/librenms/librenms/commit/8e626b38ef92e240532cdac2ac7e38706a71208b","tags":["x_refsource_MISC"],"url":"https://github.com/librenms/librenms/commit/8e626b38ef92e240532cdac2ac7e38706a71208b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a9619601c6c9030629030435fa9241cc62482b14ef10266e3423427968f7e1bb · sha256:101b8897dcbea008… · /containers/cna/references/2
{"name":"https://github.com/librenms/librenms/pull/19038","tags":["x_refsource_MISC"],"url":"https://github.com/librenms/librenms/pull/19038"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a9619601c6c9030629030435fa9241cc62482b14ef10266e3423427968f7e1bb · sha256:101b8897dcbea008… · /containers/cna/references/1
{"name":"https://github.com/librenms/librenms/releases/tag/26.2.0","tags":["x_refsource_MISC"],"url":"https://github.com/librenms/librenms/releases/tag/26.2.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a9619601c6c9030629030435fa9241cc62482b14ef10266e3423427968f7e1bb · sha256:101b8897dcbea008… · /containers/cna/references/3
{"name":"https://github.com/librenms/librenms/security/advisories/GHSA-gqx7-99jw-6fpr","tags":["x_refsource_CONFIRM"],"url":"https://github.com/librenms/librenms/security/advisories/GHSA-gqx7-99jw-6fpr"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a9619601c6c9030629030435fa9241cc62482b14ef10266e3423427968f7e1bb · sha256:101b8897dcbea008… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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