Is CVE-2026-34833 in the CISA KEV catalog?

No. CVE-2026-34833 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-34833?

CVE-2026-34833 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2026-34833?

CVE-2026-34833 has an EPSS score of 0.17% (7th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-34833?

Upgrade webmail to 1.4.10 or later.

CVE & CISA-KEV Catalog

CVE-2026-34833

HIGH

7.5

CVSS v3

NVD

Description

Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to version 1.4.10, the GET /api/auth/session endpoint previously included the user's plaintext password in the JSON response. This exposed credentials to browser logs, local caches, and network proxie. This issue has been patched in version 1.4.10.

CWE-312

How to fix

Remediation Available

webmailNVD

Affected:< 1.4.10Fixed in:1.4.10CVE-2026-34833derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

0.17%probability of exploitation in 30 days

7thpercentile

Low risk: more likely to be exploited than 7% of all known CVEs.

References

Vendor Advisory1

github.com

Product1

github.com

Embed a live status badge for CVE-2026-34833

Markdown

[![CVE-2026-34833](https://tridentstack.com/cve/badge/CVE-2026-34833.svg)](https://tridentstack.com/cve/CVE-2026-34833)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-34833"><img src="https://tridentstack.com/cve/badge/CVE-2026-34833.svg" alt="CVE-2026-34833"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-09.