CVE Explorer

CVE-2026-13377

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in WatchGuard Fireware OS SIP Proxy module allows Stored XSS. This vulnerability is an additional unmitigated attack path for CVE-2025-6947. This issue affects Fireware OS 12.0 up to and including 12.12, 12.5 up to and including 12.5.18, and 2025.1 up to and including 2026.2.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:fedb464aae0c59e3f12fb69dadc882443f55b9f893c9dce2bbced40dd9defe5b

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","product":"Fireware OS","vendor":"WatchGuard","versions":[{"lessThanOrEqual":"12.12","status":"affected","version":"12.0","versionType":"semver"},{"lessThanOrEqual":"12.5.18","status":"affected","version":"12.5","versionType":"semver"},{"lessThanOrEqual":"2026.2","status":"affected","version":"2025.1","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:d9c58d91e2dfa4e77f2c8b0466565298019d71e104eb2a119026149b3bc714f1 · sha256:a3582cd071f7366e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":4.8,"baseSeverity":"MEDIUM","privilegesRequired":"HIGH","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"…

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:d9c58d91e2dfa4e77f2c8b0466565298019d71e104eb2a119026149b3bc714f1 · sha256:a3582cd071f7366e… · /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 (XSS or 'Cross-site Scripting')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:d9c58d91e2dfa4e77f2c8b0466565298019d71e104eb2a119026149b3bc714f1 · sha256:a3582cd071f7366e… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"tags":["vendor-advisory"],"url":"https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00019"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d9c58d91e2dfa4e77f2c8b0466565298019d71e104eb2a119026149b3bc714f1 · sha256:a3582cd071f7366e… · /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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