CVE-2026-25529HIGH 8.1EPSS p14.1%
CVE-2026-25529CVE-2026-25529
Description
Postal is an open source SMTP server. Postal versions less than 3.3.5 had a HTML injection vulnerability that allowed unescaped data to be included in the admin interface. The primary way for unescaped data to be added is via the API's "send/raw" method. This could allow arbitrary HTML to be injected in to the page which may modify the page in a misleading way or allow for unauthorised javascript to be executed. Fixed in 3.3.5 and higher.
Scoring
| CVSS 3.1 | 8.1 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
| EPSS | 0.24% probability of exploitation · percentile 14.1% · 2026-06-19T12:03:05Z |
| Published | 2026-03-12 |
| Last modified | 2026-03-19 |
Underlying weaknesses· 1
References
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')cwe-79 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.