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CVE-2026-64628

Grav contains a stored cross-site scripting vulnerability in shortcode-core attribute handlers where the XSS detection scan only matches payloads containing literal angle brackets, allowing shortcode parameters to bypass validation. Attackers with admin.pages permission can inject malicious JavaScript through shortcode attributes that execute in any viewer's browser, including administrators, enabling session hijacking via admin nonce theft.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ab34a3d92c3e0269ac9e8c055224229c393fe40e3e8dfbc4141d9ef75805a504
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":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact"…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2985f5e943bb4163e5cd3762ef4d50ab1998b14fe2c0e9ae2d8ca7c9c9abde1a · sha256:0ac8586a4533431b… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2985f5e943bb4163e5cd3762ef4d50ab1998b14fe2c0e9ae2d8ca7c9c9abde1a · sha256:0ac8586a4533431b… · /containers/cna/metrics/1/cvssV3_1

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"grav","vendor":"getgrav","versions":[{"lessThanOrEqual":"6.2.1","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:2985f5e943bb4163e5cd3762ef4d50ab1998b14fe2c0e9ae2d8ca7c9c9abde1a · sha256:0ac8586a4533431b… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2985f5e943bb4163e5cd3762ef4d50ab1998b14fe2c0e9ae2d8ca7c9c9abde1a · sha256:0ac8586a4533431b… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:2985f5e943bb4163e5cd3762ef4d50ab1998b14fe2c0e9ae2d8ca7c9c9abde1a · sha256:0ac8586a4533431b… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-79","description":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:2985f5e943bb4163e5cd3762ef4d50ab1998b14fe2c0e9ae2d8ca7c9c9abde1a · sha256:0ac8586a4533431b… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"GitHub Security Advisory (GHSA-q5fw-vpqc-fgph)","tags":["vendor-advisory"],"url":"https://github.com/getgrav/grav/security/advisories/GHSA-q5fw-vpqc-fgph"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2985f5e943bb4163e5cd3762ef4d50ab1998b14fe2c0e9ae2d8ca7c9c9abde1a · sha256:0ac8586a4533431b… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/getgrav/grav/security/advisories/GHSA-q5fw-vpqc-fgph"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2985f5e943bb4163e5cd3762ef4d50ab1998b14fe2c0e9ae2d8ca7c9c9abde1a · sha256:0ac8586a4533431b… · /containers/adp/0/references/0
{"name":"VulnCheck Advisory: Grav Stored Cross-Site Scripting via Shortcode Attribute Handlers","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/grav-stored-cross-site-scripting-via-shortcode-attribute-handlers"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:2985f5e943bb4163e5cd3762ef4d50ab1998b14fe2c0e9ae2d8ca7c9c9abde1a · sha256:0ac8586a4533431b… · /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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