CVE-2026-43504

MEDIUM
6.5
CVSS Score
Published: May 1, 2026 at 02:40 PM UTC
Updated: June 17, 2026 at 10:49 AM UTC
1 product affected across 1 vendorProsody

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

An issue was discovered in Prosody before 0.12.6 and 1.0.0 through 13.0.0 before 13.0.5, when mod_proxy65 is enabled. Because mod_proxy65 mishandles access control in a paused scenario, relaying of unauthenticated traffic can occur.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.12.61.0.0 ≤ v < 13.0.513.0.0 ≤ v < 13.0.51.0.0
Affected range stops below 0.12.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 13.0.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Mailing ListPatchThird Party Advisory
Source: cverecord
https://www.openwall.com/lists/oss-security/2026/05/01/5
MitigationPatchVendor Advisory
Source: cverecord
https://prosody.im/security/advisory_735dd9d3/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMmitre
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusANALYZED
CWE
CWE-863

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