CVE Explorer

CVE-2026-58657

Grav before 2.0.0 (affected through 2.0.0-rc.9 and the 2.0 branch) contains a stored CSS injection vulnerability in the Markdown image resize() media action. Prior media hardening rejects direct ?style= payloads and unsafe attribute() fallbacks, but the resize() action in Excerpts::processMediaActions() writes caller-controlled values directly into the image's styleAttributes. A lower-privileged content editor who can edit page Markdown can store a crafted image URL with semicolon-delimited CSS

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:30283c94da4c5ed31eafae74be218983ae53125e2cd499b4fbbea29f77d1b74a

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/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:v2:0cfc94e49b095227590a61192456f73833e9d13e0aadd2a9e8618356d8f33733 · sha256:603be534ef4d0750… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":4.8,"baseSeverity":"MEDIUM","privilegesRequired":"HIGH","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:0cfc94e49b095227590a61192456f73833e9d13e0aadd2a9e8618356d8f33733 · sha256:603be534ef4d0750… · /containers/cna/metrics/0/cvssV4_0

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","product":"Grav","vendor":"Grav","versions":[{"lessThan":"2.0.0","status":"affected","version":"2.0.0-rc.9","versionType":"semver"},{"status":"unaffected","version":"2.0.0","versionType":"semver"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:0cfc94e49b095227590a61192456f73833e9d13e0aadd2a9e8618356d8f33733 · sha256:603be534ef4d0750… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:0cfc94e49b095227590a61192456f73833e9d13e0aadd2a9e8618356d8f33733 · sha256:603be534ef4d0750… · /containers/cna/metrics/1/cvssV3_1

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:0cfc94e49b095227590a61192456f73833e9d13e0aadd2a9e8618356d8f33733 · sha256:603be534ef4d0750… · /containers/cna/metrics/0/cvssV4_0

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:v2:0cfc94e49b095227590a61192456f73833e9d13e0aadd2a9e8618356d8f33733 · sha256:603be534ef4d0750… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions

{"name":"https://github.com/getgrav/grav/commit/6582166173bb8eb5869d96aea384e0e73777c94c","tags":["patch"],"url":"https://github.com/getgrav/grav/commit/6582166173bb8eb5869d96aea384e0e73777c94c"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0cfc94e49b095227590a61192456f73833e9d13e0aadd2a9e8618356d8f33733 · sha256:603be534ef4d0750… · /containers/cna/references/1

{"name":"https://github.com/getgrav/grav/commit/e03d29aa0d3ece16d73c1ffccfa78df8bf5f28b8","tags":["patch"],"url":"https://github.com/getgrav/grav/commit/e03d29aa0d3ece16d73c1ffccfa78df8bf5f28b8"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0cfc94e49b095227590a61192456f73833e9d13e0aadd2a9e8618356d8f33733 · sha256:603be534ef4d0750… · /containers/cna/references/2

{"name":"GitHub Security Advisory (GHSA-ffmg-hfvg-jhg9)","tags":["vendor-advisory"],"url":"https://github.com/getgrav/grav/security/advisories/GHSA-ffmg-hfvg-jhg9"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0cfc94e49b095227590a61192456f73833e9d13e0aadd2a9e8618356d8f33733 · sha256:603be534ef4d0750… · /containers/cna/references/0

{"tags":["exploit"],"url":"https://github.com/getgrav/grav/security/advisories/GHSA-ffmg-hfvg-jhg9"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0cfc94e49b095227590a61192456f73833e9d13e0aadd2a9e8618356d8f33733 · sha256:603be534ef4d0750… · /containers/adp/0/references/0

{"name":"VulnCheck Advisory: Grav - Stored CSS Injection via Markdown Image resize() Action","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/grav-stored-css-injection-via-markdown-image-resize-action"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:0cfc94e49b095227590a61192456f73833e9d13e0aadd2a9e8618356d8f33733 · sha256:603be534ef4d0750… · /containers/cna/references/3

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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