- Description
- justhtml versions 0.9.0 through 1.21.0 contain a cross-site scripting vulnerability in to_markdown() where inline code spans fail to account for blank lines as block boundaries. Attackers can inject blank lines into code or pre element text to break the inline span, causing sanitized HTML to be emitted unescaped and re-parsed as live Markdown by compliant renderers.
- Source
- disclosure@vulncheck.com
- NVD status
- Received
CVSS 4.0
- Type
- Secondary
- Base score
- 5.3
- Impact score
- -
- Exploitability score
- -
- Vector string
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/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
- 6.1
- Impact score
- 2.7
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Severity
- MEDIUM
- disclosure@vulncheck.com
- CWE-79
- Hype score
- Not currently trending
🚨*CVE* CVE-2026-77088 justhtml versions 0.9.0 through 1.21.0 contain a cross-site scripting vulnerability in to_markdown() where inline code spans fail to account for blank lines as block … https://t.co/0d7enDkaLf ----- Traducción: CVE-2026-77088 jus… https://t.co/utmtNg
@infoflowcloud
23 Aug 2026
11 Impressions
0 Retweets
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CVE-2026-77088 Cross-Site Scripting in justhtml 0.9.0 Through 1.21.0 via Inline Code Spans https://t.co/phkDmP2aKW
@VulmonFeeds
23 Aug 2026
95 Impressions
1 Retweet
1 Like
0 Bookmarks
0 Replies
0 Quotes