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CVE-2026-55523— PraisonAI has a`web_crawl` SSRF protection bypass via unchecked redirect targets

Quick assessment

Affected
MervinPraison PraisonAI
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mervin Praison PraisonAI是Mervin Praison个人开发者开源的一个低代码多智能体协作框架。 Mervin Praison PraisonAI 1.5.128版本至1.6.57版本存在服务端请求伪造漏洞，该漏洞源于web_crawl()函数验证初始URL后未对重定向目标进行重新验证，容易受到服务端请求伪造攻击，可能导致攻击者访问本机回环、私有网络或云元数据端点。

CVSS 7.7 · High EPSS 0.34% · P27

Affected Version Matrix 1

VendorProduct Version RangeStatus
MervinPraison PraisonAI >= 1.5.128, < 1.6.58 affected
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I. Basic Information for CVE-2026-55523

Vulnerability Information
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Vulnerability Title
PraisonAI has a`web_crawl` SSRF protection bypass via unchecked redirect targets
Source: CVE Program / CVE List V5
Vulnerability Description
PraisonAI is a multi-agent teams system. In versions 1.5.128 through 1.6.57, the praisonaiagents.tools.web_crawl_tools.web_crawl() function is vulnerable to server-side request forgery. While it validates the initially supplied URL and blocks direct loopback and private destinations, its default httpx fallback uses httpx.Client(follow_redirects=True) and does not revalidate intermediate or final redirect targets. An attacker who can influence a URL passed to web_crawl(), directly or through an agent or tool workflow, can supply an attacker-controlled public URL that passes the initial host check and then redirects to loopback, private-network, or cloud metadata endpoints reachable from the host, with the redirected response body returned in the web_crawl() result. This constitutes an incomplete fix and patch bypass for the previously disclosed web_crawl SSRF class (GHSA-qq9r-63f6-v542 / CVE-2026-40160 and GHSA-8f4v-xfm9-3244), since the guard validates only the requested URL and not the destination actually fetched after redirection. This issue has been fixed in version 1.6.58.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Mervin Praison PraisonAI 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mervin Praison PraisonAI是Mervin Praison个人开发者开源的一个低代码多智能体协作框架。 Mervin Praison PraisonAI 1.5.128版本至1.6.57版本存在服务端请求伪造漏洞，该漏洞源于web_crawl()函数验证初始URL后未对重定向目标进行重新验证，容易受到服务端请求伪造攻击，可能导致攻击者访问本机回环、私有网络或云元数据端点。
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
MervinPraison PraisonAI >= 1.5.128, < 1.6.58 -

II. Public POCs for CVE-2026-55523

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 10133 chars
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III. Intelligence Information for CVE-2026-55523

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Vendor Advisories for CVE-2026-55523 (1)

Same Patch Batch · MervinPraison · 2026-08-05 · 4 CVEs total

CVE-2026-48168 10.0 CRITICAL PraisonAI: GitHub Actions Claude workflow command injection via unquoted PR branch name
CVE-2026-55522 7.8 HIGH PraisonAI workflow include bypasses tools.py autoload opt-in and executes included recipe
CVE-2026-55524 7.5 HIGH PraisonAI: SSRF in web_crawl tool via redirect-following and DNS rebinding (validate-then-

IV. Related Vulnerabilities

Same product: PraisonAI
Same vendor: MervinPraison
Same weakness: CWE-918

V. Comments for CVE-2026-55523

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