VulnSocial

CVE-2026-35391Disclosure(bulwarkmail / webmail)

LOWCVSS 7.5 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to 1.4.11, the getClientIP() function in lib/admin/session.ts trusted the first (leftmost) entry of the X-Forwarded-For header, which is fully controlled by the client. An attacker could forge their source IP address to bypass IP-based rate limiting (enabling brute-force attacks against the admin login) or forge audit log entries (making malicious activity appear to originate from arbitrary IP addresses). This vulnerability is fixed in 1.4.11.

bulwarkmail CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-348

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • webmail

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
bulwarkmail
Products
webmail

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-04-06: 2Technical Details · 2026-04-06: 204-06
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-35391 Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to 1.4.11, the getClientIP() function in lib/admin/session.ts trusted the first (leftm… https://www.cve.org/CVERecord?id=CVE-2026-35391 ----- Traducción: CVE-2026-35391 Bul… http://infoflow.cloud`

    Post summary

    The text announces CVE‑2026‑35391 for Bulwark Webmail, highlighting a vulnerability in the getClientIP() function before version 1.4.11, and links to the official CVE record.

    0000040
    67 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-35391 Bulwark Webmail is a self-hosted webmail client for Stalwart Mail Server. Prior to 1.4.11, the getClientIP() function in lib/admin/session.ts trusted the first (leftm… https://www.cve.org/CVERecord?id=CVE-2026-35391

    Post summary

    The post discloses CVE‑2026‑35391 in Bulwark Webmail, detailing how the getClientIP() function mishandles client IP addresses in versions before 1.4.11; no PoC, exploit, patch or active exploitation evidence is presented.

    00000184
    57.0K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appbulwarkmailwebmail---

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