CVE-2026-25529 is a high-severity HTML injection vulnerability (CVSS 8.1) affecting Postal SMTP server versions prior to 3.3.5. This flaw allows unescaped data, primarily from the API's "send/raw" method, to be displayed in the admin interface, enabling misleading page modifications or unauthorized JavaScript execution. With a network attack vector and low complexity, it poses a high risk to confidentiality and integrity without requiring user interaction. There is currently no evidence of active exploitation, public exploit code, or significant community discussion for this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.3.5CPE matchmatch criteria | cpe:2.3:a:postalserver:postal:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.