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CVE-2026-34833

27
FAUCET Score

CVE-2026-34833 identifies a critical information exposure vulnerability in Bulwark Webmail versions prior to 1.4.10. This flaw caused the GET /api/auth/session endpoint to return users' plaintext passwords in its JSON response, exposing credentials to browser logs, local caches, and network proxies. Rated with a CVSS score of 8.7 (High), it presents a significant confidentiality risk with a network attack vector and low complexity. Currently, there is no evidence of active exploitation or public exploit code, and community discussion remains minimal.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.4.10CPE matchmatch criteria
cpe:2.3:a:bulwarkmail:webmail:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

8.7HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.17%
Probability of exploitation in next 30 days
EPSS Percentile
6.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0017 is in the 0th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media 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

Vendor Patches (1)

github_advisoryvendor investigatingvia nvd_reference
View patch

References

github.com / bulwarkmail/webmail/releases/tag/1.4.10
Product
github.com / bulwarkmail/webmail/security/advisories/GHSA-47pm-883h-885r
Vendor Advisory