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CVE-2026-33169

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. `NumberToDelimitedConverter` uses a lookahead-based regular expression with `gsub!` to insert thousands delimiters. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, the interaction between the repeated lookahead group and `gsub!` can produce quadratic time complexity on long digit strings. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ed23c92cdbe4cc222e1583df6b20bba20db8d46efd9757bd2a6152e0ea6eb316
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5a41bd9df389029c1275d9ea9cf7c8265d895e71694c9efc5ab4556115e91179 · sha256:5196ce126514428c… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-1333","description":"CWE-1333: Inefficient Regular Expression Complexity","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5a41bd9df389029c1275d9ea9cf7c8265d895e71694c9efc5ab4556115e91179 · sha256:5196ce126514428c… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"activesupport","vendor":"rails","versions":[{"status":"affected","version":">= 8.1.0.beta1, < 8.1.2.1"},{"status":"affected","version":">= 8.0.0.beta1, < 8.0.4.1"},{"status":"affected","version":"< 7.2.3.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:5a41bd9df389029c1275d9ea9cf7c8265d895e71694c9efc5ab4556115e91179 · sha256:5196ce126514428c… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","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:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:5a41bd9df389029c1275d9ea9cf7c8265d895e71694c9efc5ab4556115e91179 · sha256:5196ce126514428c… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5a41bd9df389029c1275d9ea9cf7c8265d895e71694c9efc5ab4556115e91179 · sha256:5196ce126514428c… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-1333","description":"CWE-1333: Inefficient Regular Expression Complexity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:5a41bd9df389029c1275d9ea9cf7c8265d895e71694c9efc5ab4556115e91179 · sha256:5196ce126514428c… · /containers/cna/problemTypes/1/descriptions/0

Source references

7 source assertions
{"name":"https://github.com/rails/rails/commit/29154f1097da13d48fdb3200760b3e3da66dcb11","tags":["x_refsource_MISC"],"url":"https://github.com/rails/rails/commit/29154f1097da13d48fdb3200760b3e3da66dcb11"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5a41bd9df389029c1275d9ea9cf7c8265d895e71694c9efc5ab4556115e91179 · sha256:5196ce126514428c… · /containers/cna/references/1
{"name":"https://github.com/rails/rails/commit/b54a4b373c6f042cab6ee2033246b1c9ecc38974","tags":["x_refsource_MISC"],"url":"https://github.com/rails/rails/commit/b54a4b373c6f042cab6ee2033246b1c9ecc38974"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5a41bd9df389029c1275d9ea9cf7c8265d895e71694c9efc5ab4556115e91179 · sha256:5196ce126514428c… · /containers/cna/references/2
{"name":"https://github.com/rails/rails/commit/ec1a0e215efd27a3b3911aae6df978a80f456a49","tags":["x_refsource_MISC"],"url":"https://github.com/rails/rails/commit/ec1a0e215efd27a3b3911aae6df978a80f456a49"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5a41bd9df389029c1275d9ea9cf7c8265d895e71694c9efc5ab4556115e91179 · sha256:5196ce126514428c… · /containers/cna/references/3
{"name":"https://github.com/rails/rails/releases/tag/v7.2.3.1","tags":["x_refsource_MISC"],"url":"https://github.com/rails/rails/releases/tag/v7.2.3.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5a41bd9df389029c1275d9ea9cf7c8265d895e71694c9efc5ab4556115e91179 · sha256:5196ce126514428c… · /containers/cna/references/4
{"name":"https://github.com/rails/rails/releases/tag/v8.0.4.1","tags":["x_refsource_MISC"],"url":"https://github.com/rails/rails/releases/tag/v8.0.4.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5a41bd9df389029c1275d9ea9cf7c8265d895e71694c9efc5ab4556115e91179 · sha256:5196ce126514428c… · /containers/cna/references/5
{"name":"https://github.com/rails/rails/releases/tag/v8.1.2.1","tags":["x_refsource_MISC"],"url":"https://github.com/rails/rails/releases/tag/v8.1.2.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5a41bd9df389029c1275d9ea9cf7c8265d895e71694c9efc5ab4556115e91179 · sha256:5196ce126514428c… · /containers/cna/references/6
{"name":"https://github.com/rails/rails/security/advisories/GHSA-cg4j-q9v8-6v38","tags":["x_refsource_CONFIRM"],"url":"https://github.com/rails/rails/security/advisories/GHSA-cg4j-q9v8-6v38"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:5a41bd9df389029c1275d9ea9cf7c8265d895e71694c9efc5ab4556115e91179 · sha256:5196ce126514428c… · /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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