VulnSocial

CVE-2026-72720Disclosure

LOWCVSS 6.4 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Discourse is an open-source discussion platform. Prior to 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1, Discourse has HTML injection in PrettyText.format_for_email because cooked attribute values are reparsed as markup. Crafted Vimeo iframe sources, secure-upload URLs or dimensions, and hashtag data-slug values can cause decoded attribute text to be reinterpreted as HTML. The vulnerable conversion also fails to strictly validate the Vimeo iframe host and path, allowing non-Vimeo allowlisted iframes to be converted. This issue is fixed in versions 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-08-10: 2Technical Details · 2026-08-10: 208-10
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-72720 Discourse is an open-source discussion platform. Prior to 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1, Discourse has HTML injection in PrettyText.format_for_e… https://www.cve.org/CVERecord?id=CVE-2026-72720 ----- Traducción: CVE-2026-72720 Dis… http://infoflow.cloud`

    Post summary

    The tweet announces CVE‑2026‑72720, describing an HTML injection flaw in Discourse’s PrettyText formatter, with no PoC, exploit, patch, or active exploitation noted.

    0000029
    98 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-72720 Discourse is an open-source discussion platform. Prior to 2026.1.7, 2026.6.2, 2026.7.1, and 2026.8.0-latest.1, Discourse has HTML injection in PrettyText.format_for_e… https://www.cve.org/CVERecord?id=CVE-2026-72720

    Post summary

    The text announces that older Discourse versions contain an HTML injection vulnerability (CVE‑2026‑72720) and does not provide PoC, exploit code, or patch details.

    000001.1K
    57.9K followersView on X

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