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CVE-2026-43504

Quick assessment

Affected
Prosody Prosody
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Prosody是Prosody开源的一个即时通信服务器软件。 Prosody 0.12.6之前版本和1.0.0至13.0.0版本中13.0.5之前版本存在安全漏洞，该漏洞源于mod_proxy65在暂停场景中访问控制处理不当，可能导致未认证流量中继。

CVSS 6.5 · Medium EPSS 0.35% · P26

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 2

VendorProduct Version RangeStatus
Prosody Prosody < 0.12.6 affected
1.0.0< 13.0.5 affected
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I. Basic Information for CVE-2026-43504

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Prosody 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Prosody是Prosody开源的一个即时通信服务器软件。 Prosody 0.12.6之前版本和1.0.0至13.0.0版本中13.0.5之前版本存在安全漏洞，该漏洞源于mod_proxy65在暂停场景中访问控制处理不当，可能导致未认证流量中继。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Prosody Prosody 0 ~ 0.12.6 -

II. Public POCs for CVE-2026-43504

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III. Intelligence Information for CVE-2026-43504

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Vendor Advisories for CVE-2026-43504 (1)

Mailing List Discussions for CVE-2026-43504 (1)

Same Patch Batch · Prosody · 2026-05-01 · 4 CVEs total

CVE-2026-43505 6.5 MEDIUM Prosody 安全漏洞
CVE-2026-43507 5.3 MEDIUM Prosody 安全漏洞
CVE-2026-43506 5.3 MEDIUM Prosody 安全漏洞

IV. Related Vulnerabilities

Same product: Prosody
Same vendor: Prosody
Same weakness: CWE-863

V. Comments for CVE-2026-43504

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