- Description
- Grav is a file-based Web platform. Prior to 2.0.0-beta.2, an authenticated user with page editing permissions can inject an executable JavaScript event-handler attribute into rendered image HTML through Grav's Markdown media action syntax. The issue is caused by Markdown image query parameters being converted into callable media actions. The public attribute() media method can be reached this way, allowing an editor to set an arbitrary HTML attribute name and value on the generated image element. This vulnerability is fixed in 2.0.0-beta.2.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
- Products
- grav
CVSS 4.0
- Type
- Secondary
- Base score
- 6.9
- Impact score
- -
- Exploitability score
- -
- Vector string
- CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity
- MEDIUM
CVSS 3.1
- Type
- Primary
- Base score
- 4.8
- Impact score
- 2.7
- Exploitability score
- 1.7
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
- Severity
- MEDIUM
- security-advisories@github.com
- CWE-79
- Hype score
- Not currently trending
🟠 Grav CMS, Audio/Video rawHtml XSS, #CVE ID: N/A (sibling #CVE-2026-42841, #CVE-2026-55890) (Medium) -DC-Sep2026-2431 https://t.co/kx8jcxMXpo
@dailycve
17 Sept 2026
40 Impressions
0 Retweets
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0 Replies
0 Quotes
🚨*CVE* CVE-2026-42841 Grav is a file-based Web platform. Prior to 2.0.0-beta.2, an authenticated user with page editing permissions can inject an executable JavaScript event-handler attrib… https://t.co/S6MiVKJNzq ----- Traducción: CVE-2026-42841 Gra… https://t.co/utmtNg
@infoflowcloud
11 May 2026
27 Impressions
0 Retweets
1 Like
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0 Quotes
[
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*",
"matchCriteriaId": "9C284702-7909-4A5C-91FE-392FC5BA58C7",
"versionEndIncluding": "1.8.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:getgrav:grav:2.0.0:beta1:*:*:*:*:*:*",
"matchCriteriaId": "1ABB323F-20AF-40F3-BCD9-262644D242A1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
]