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CVE-2026-27696

changedetection.io is a free open source web page change detection tool. In versions prior to 0.54.1, changedetection.io is vulnerable to Server-Side Request Forgery (SSRF) because the URL validation function `is_safe_valid_url()` does not validate the resolved IP address of watch URLs against private, loopback, or link-local address ranges. An authenticated user (or any user when no password is configured, which is the default) can add a watch for internal network URLs. The application fetches
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8ab2fa88f1d24c4fa8e070e75841bcf0f4da70026c6a998bc0d7893e9c2101f9
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"changedetection.io","vendor":"dgtlmoon","versions":[{"status":"affected","version":"< 0.54.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8fbef4d01df478353dd4343834389a4d353a0ece1437504a02d241af6f02b292 · sha256:89572fd692b1a166… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.6,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8fbef4d01df478353dd4343834389a4d353a0ece1437504a02d241af6f02b292 · sha256:89572fd692b1a166… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8fbef4d01df478353dd4343834389a4d353a0ece1437504a02d241af6f02b292 · sha256:89572fd692b1a166… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/dgtlmoon/changedetection.io/commit/fe7aa38c651d73fe5f41ce09855fa8f97193747b","tags":["x_refsource_MISC"],"url":"https://github.com/dgtlmoon/changedetection.io/commit/fe7aa38c651d73fe5f41ce09855fa8f97193747b"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8fbef4d01df478353dd4343834389a4d353a0ece1437504a02d241af6f02b292 · sha256:89572fd692b1a166… · /containers/cna/references/1
{"name":"https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-3c45-4pj5-ch7m","tags":["x_refsource_CONFIRM"],"url":"https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-3c45-4pj5-ch7m"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8fbef4d01df478353dd4343834389a4d353a0ece1437504a02d241af6f02b292 · sha256:89572fd692b1a166… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-3c45-4pj5-ch7m"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8fbef4d01df478353dd4343834389a4d353a0ece1437504a02d241af6f02b292 · sha256:89572fd692b1a166… · /containers/adp/0/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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