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CVE-2026-62237

Grav before 2.0.4 contains a regular expression denial of service (ReDoS) vulnerability in the regex_replace filter and function, which are allowlisted in the Twig content sandbox. When Twig processing in page content is enabled (security.twig_content.process_enabled: true, disabled by default), an authenticated page editor can supply a catastrophically backtracking PCRE pattern that is passed directly to PHP's preg_replace(), causing unbounded CPU consumption and denial of service to the web se
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1fd670c8cdbc1536ab3977149ee239a42ea656d7e14340848fc4c441fa5effc4
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/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:v2:4fbc01fd07fe9ee7da90200e4a28e4c65675a3470ecd69860ab548dfec7634c3 · sha256:85e081b539c2b3ef… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact"…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4fbc01fd07fe9ee7da90200e4a28e4c65675a3470ecd69860ab548dfec7634c3 · sha256:85e081b539c2b3ef… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"grav","repo":"https://github.com/getgrav/grav","vendor":"getgrav","versions":[{"lessThan":"2.0.4","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.0.4","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4fbc01fd07fe9ee7da90200e4a28e4c65675a3470ecd69860ab548dfec7634c3 · sha256:85e081b539c2b3ef… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/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:v2:4fbc01fd07fe9ee7da90200e4a28e4c65675a3470ecd69860ab548dfec7634c3 · sha256:85e081b539c2b3ef… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4fbc01fd07fe9ee7da90200e4a28e4c65675a3470ecd69860ab548dfec7634c3 · sha256:85e081b539c2b3ef… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-1333","description":"Inefficient Regular Expression Complexity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4fbc01fd07fe9ee7da90200e4a28e4c65675a3470ecd69860ab548dfec7634c3 · sha256:85e081b539c2b3ef… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["exploit"],"url":"https://github.com/getgrav/grav/security/advisories/GHSA-37f3-6p89-6qr9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4fbc01fd07fe9ee7da90200e4a28e4c65675a3470ecd69860ab548dfec7634c3 · sha256:85e081b539c2b3ef… · /containers/adp/0/references/0
{"name":"GitHub Security Advisory (GHSA-37f3-6p89-6qr9)","tags":["vendor-advisory"],"url":"https://github.com/getgrav/grav/security/advisories/GHSA-37f3-6p89-6qr9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4fbc01fd07fe9ee7da90200e4a28e4c65675a3470ecd69860ab548dfec7634c3 · sha256:85e081b539c2b3ef… · /containers/cna/references/0
{"name":"VulnCheck Advisory: Grav < 2.0.4 ReDoS via regex_replace in Sandbox","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/grav-redos-via-regex-replace-in-sandbox"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4fbc01fd07fe9ee7da90200e4a28e4c65675a3470ecd69860ab548dfec7634c3 · sha256:85e081b539c2b3ef… · /containers/cna/references/1

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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