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CVE-2026-53505

Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor's filters:proportion(<value>) filter does not enforce an upper bound on <value> and runs in the post-transform phase. An attacker can trigger extremely large resizes (CPU/memory exhaustion) and cause denial of service. This issue is fixed in 7.8.0.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b7c9fc27c39d0b30aa70a64adc59c566b103c5a52ce6e0010e4e9c214fe7d2c2
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:v2:9c07acbe6d50274c1e7e527974cbe307a264e02aafce6e40eee3a32058ab22c3 · sha256:d2c01bbbb71e28b1… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:9c07acbe6d50274c1e7e527974cbe307a264e02aafce6e40eee3a32058ab22c3 · sha256:d2c01bbbb71e28b1… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:9c07acbe6d50274c1e7e527974cbe307a264e02aafce6e40eee3a32058ab22c3 · sha256:d2c01bbbb71e28b1… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/thumbor/thumbor/commit/2c716119de986cfc68c7071af52a98187e006023","tags":["x_refsource_MISC"],"url":"https://github.com/thumbor/thumbor/commit/2c716119de986cfc68c7071af52a98187e006023"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9c07acbe6d50274c1e7e527974cbe307a264e02aafce6e40eee3a32058ab22c3 · sha256:d2c01bbbb71e28b1… · /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:v2:9c07acbe6d50274c1e7e527974cbe307a264e02aafce6e40eee3a32058ab22c3 · sha256:d2c01bbbb71e28b1… · /containers/cna/references/2
{"name":"https://github.com/thumbor/thumbor/security/advisories/GHSA-phj3-59pf-cp83","tags":["x_refsource_CONFIRM"],"url":"https://github.com/thumbor/thumbor/security/advisories/GHSA-phj3-59pf-cp83"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9c07acbe6d50274c1e7e527974cbe307a264e02aafce6e40eee3a32058ab22c3 · sha256:d2c01bbbb71e28b1… · /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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