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CVE-2026-91159: Improper Neutralization of Input During Web Page Generation

🗓️ 14 Oct 2026 00:00:00Reported by Rapid7Type 
rapid7
 rapid7
🔗 www.rapid7.com👁 3 Views

Stored visual overlays in Discourse via oEmbed processing of allowlisted iframes.

Related
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-91159
30 Sep 202621:00
–circl
cve
CVE
CVE-2026-91159
14 Oct 202615:30
–cve
cvelist
Cvelist
CVE-2026-91159 Discourse: Stored oEmbed HTML injection via allowed iframe
14 Oct 202615:30
–cvelist
githubexploit
GithubExploit
Exploit for CVE-2026-91159
30 Sep 202620:12
–githubexploit
euvd
EUVD
EUVD-2026-101299
14 Oct 202615:30
–euvd
nvd
NVD
CVE-2026-91159
14 Oct 202616:17
–nvd
ptsecurity
Positive Technologies
PT-2026-114332
14 Oct 202600:00
–ptsecurity
vulnrichment
Vulnrichment
CVE-2026-91159 Discourse: Stored oEmbed HTML injection via allowed iframe
14 Oct 202615:30
–vulnrichment

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20 Oct 2026 00:00Current
5.6Medium risk
Vulners AI Score5.6
CVSS 3.17.7
EPSS0.00435
3