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CVE-2026-53502

Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, file_loader decodes percent-encoded path segments after its root-boundary validation, allowing traversal outside FILE_LOADER_ROOT_PATH through watermark or frame filter input. This issue is fixed in 7.8.0.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:61ef76227ec81477a60c528499e702ca0f838c2c45011a711dc39152f2ac40d8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"thumbor","vendor":"thumbor","versions":[{"status":"affected","version":"< 7.8.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c52177ed121a6888f7618e6f75d2b830f6f2eb815ee9b0774ce93ecb2fdf9f52 · sha256:c76fa62cff54bcf8… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c52177ed121a6888f7618e6f75d2b830f6f2eb815ee9b0774ce93ecb2fdf9f52 · sha256:c76fa62cff54bcf8… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c52177ed121a6888f7618e6f75d2b830f6f2eb815ee9b0774ce93ecb2fdf9f52 · sha256:c76fa62cff54bcf8… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/thumbor/thumbor/commit/3b986d13677b30fe6651c8c72ebb25957ac0a40d","tags":["x_refsource_MISC"],"url":"https://github.com/thumbor/thumbor/commit/3b986d13677b30fe6651c8c72ebb25957ac0a40d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c52177ed121a6888f7618e6f75d2b830f6f2eb815ee9b0774ce93ecb2fdf9f52 · sha256:c76fa62cff54bcf8… · /containers/cna/references/1
{"name":"https://github.com/thumbor/thumbor/releases/tag/7.8.0","tags":["x_refsource_MISC"],"url":"https://github.com/thumbor/thumbor/releases/tag/7.8.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c52177ed121a6888f7618e6f75d2b830f6f2eb815ee9b0774ce93ecb2fdf9f52 · sha256:c76fa62cff54bcf8… · /containers/cna/references/2
{"tags":["exploit"],"url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c52177ed121a6888f7618e6f75d2b830f6f2eb815ee9b0774ce93ecb2fdf9f52 · sha256:c76fa62cff54bcf8… · /containers/adp/0/references/0
{"name":"https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h","tags":["x_refsource_CONFIRM"],"url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-cj54-hpcc-gj6h"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c52177ed121a6888f7618e6f75d2b830f6f2eb815ee9b0774ce93ecb2fdf9f52 · sha256:c76fa62cff54bcf8… · /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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