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CVE-2026-35611

Addressable is an alternative implementation to the URI implementation that is part of Ruby's standard library. From 2.3.0 to before 2.9.0, within the URI template implementation in Addressable, two classes of URI template generate regular expressions vulnerable to catastrophic backtracking. Templates using the * (explode) modifier with any expansion operator (e.g., {foo*}, {+var*}, {#var*}, {/var*}, {.var*}, {;var*}, {?var*}, {&var*}) generate patterns with nested unbounded quantifiers that are
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6ea25a4ebef6883e9130feba751ab07858ce1ae364a547f41fc73bb200e460dd
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"addressable","vendor":"sporkmonger","versions":[{"status":"affected","version":">= 2.3.0, < 2.9.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9e77ac81d117ca9b8843c63261ce091061905fd36c0b8813e1ad1ba60e747e7b · sha256:99ca33708909ccd1… · /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:v2:9e77ac81d117ca9b8843c63261ce091061905fd36c0b8813e1ad1ba60e747e7b · sha256:99ca33708909ccd1… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-1333","description":"CWE-1333: Inefficient Regular Expression Complexity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:9e77ac81d117ca9b8843c63261ce091061905fd36c0b8813e1ad1ba60e747e7b · sha256:99ca33708909ccd1… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/sporkmonger/addressable/security/advisories/GHSA-h27x-rffw-24p4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/sporkmonger/addressable/security/advisories/GHSA-h27x-rffw-24p4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9e77ac81d117ca9b8843c63261ce091061905fd36c0b8813e1ad1ba60e747e7b · sha256:99ca33708909ccd1… · /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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