4.2

CVE-2026-35541: roundcube webmail Type Confusion

CVSS: 4.2v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-35541DEBIAN-CVE-2026-35541
Published 03-04-2026Last modified 03-04-2026
Open JSON

Vulnerability summary

CVE-2026-35541 is a medium (CVSS 4.2) Type Confusion vulnerability in roundcube webmail. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 22.8% of scored vulnerabilities.

Overall risk
17/100
0100
Low · default modelHow is this calculated?
CVSS score
4.2/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.31%
0%100%
Low · +0.07 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 03-04-2026
    PublishedVulnerability first disclosed.
  2. 03-04-2026
    Last modifiedVulnerability information updated.

Description

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Incorrect password comparison in the password plugin could lead to type confusion that allows a password change without knowing the old password.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.31%

Chance of exploitation in the next 30 days

Percentile

23%

Versus all other CVEs

30-day change

+0.07 pp

From 0.24% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.31%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • roundcube< 1.6.5+dfsg-1+deb12u8 | < 1.6.15+dfsg-0+deb13u1 | < 1.6.14+dfsg-1
Roundcube1 product
  • webmail< 1.5.14 | ≥ 1.6.0, < 1.6.14
Ubuntu1 product
  • roundcubeAll versions (No fix recorded)

3 vendors · 3 products

References

10 links