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CVE-2026-57852

Grav CMS scheduler-webhook plugin contains an authentication bypass vulnerability that allows unauthenticated remote attackers to trigger configured scheduled jobs by exploiting a short-circuit logic flaw in the webhook token validation. Attackers can send a single unauthenticated POST request to the scheduler webhook endpoint to execute all configured scheduled jobs or target a specific job, causing unintended execution of operator-defined commands under the web server process user.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5b0c7c17695046fa51216b5f9b2fd8dfa8fe76b87d52a24937bd1b39df8704f3
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":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.6,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f47a19e19dfda2ce3ca8839e306c6fc44d90569a5b806fca6382e4a5cac4db5b · sha256:6589c332213a0ed6… · /containers/cna/metrics/0/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpa…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f47a19e19dfda2ce3ca8839e306c6fc44d90569a5b806fca6382e4a5cac4db5b · sha256:6589c332213a0ed6… · /containers/cna/metrics/1/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"affected","product":"Grav CMS scheduler-webhook plugin","vendor":"Trilby Media","versions":[{"lessThanOrEqual":"1.1.3","status":"affected","version":"0","versionType":"semver"},{"lessThanOrEqual":"2.0.8","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f47a19e19dfda2ce3ca8839e306c6fc44d90569a5b806fca6382e4a5cac4db5b · sha256:6589c332213a0ed6… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.6,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f47a19e19dfda2ce3ca8839e306c6fc44d90569a5b806fca6382e4a5cac4db5b · sha256:6589c332213a0ed6… · /containers/cna/metrics/0/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpa…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f47a19e19dfda2ce3ca8839e306c6fc44d90569a5b806fca6382e4a5cac4db5b · sha256:6589c332213a0ed6… · /containers/cna/metrics/1/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-303","description":"CWE-303 Incorrect Implementation of Authentication Algorithm","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f47a19e19dfda2ce3ca8839e306c6fc44d90569a5b806fca6382e4a5cac4db5b · sha256:6589c332213a0ed6… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"Product","url":"https://github.com/getgrav/grav"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f47a19e19dfda2ce3ca8839e306c6fc44d90569a5b806fca6382e4a5cac4db5b · sha256:6589c332213a0ed6… · /containers/cna/references/1
{"name":"GitHub Security Advisory (GHSA-xwv3-2mv2-w33x)","tags":["vendor-advisory"],"url":"https://github.com/getgrav/grav/security/advisories/GHSA-xwv3-2mv2-w33x"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f47a19e19dfda2ce3ca8839e306c6fc44d90569a5b806fca6382e4a5cac4db5b · sha256:6589c332213a0ed6… · /containers/cna/references/0
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/authentication-bypass-via-null-short-circuit-in-grav-cms-scheduler-webhook-token-check"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f47a19e19dfda2ce3ca8839e306c6fc44d90569a5b806fca6382e4a5cac4db5b · sha256:6589c332213a0ed6… · /containers/cna/references/2

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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