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CVE-2026-55524— PraisonAI: SSRF in web_crawl tool via redirect-following and DNS rebinding (validate-then-fetch gap)

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 1.6.58之前版本存在安全漏洞，该漏洞源于web_crawl工具仅对初始URL进行SSRF检查，存在验证与获取分离的竞争条件，可能通过HTTP重定向和DNS重绑定绕过保护，导致访问回环、私有网络或云元数据端点。

CVSS 7.5 · High EPSS 0.19% · P9

Affected Version Matrix 1

VendorProduct Version RangeStatus
MervinPraison PraisonAI < 1.6.58 affected
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I. Basic Information for CVE-2026-55524

Vulnerability Information
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Vulnerability Title
PraisonAI: SSRF in web_crawl tool via redirect-following and DNS rebinding (validate-then-fetch gap)
Source: CVE Program / CVE List V5
Vulnerability Description
PraisonAI is a multi-agent teams system. In versions prior to 1.6.58, the web_crawl tool performs its SSRF check only on the initially supplied URL, allowing the protection to be bypassed so the tool connects to attacker-chosen internal destinations. The check resolves the hostname once with socket.gethostbyname and rejects private/loopback/link-local results, but then passes the URL to a fetcher using httpx.Client(follow_redirects=True) (or urllib.request.urlopen when httpx is absent, which also follows redirects) that re-resolves the hostname at connect time with no further validation. This validate-here/fetch-there gap is exploitable through both HTTP redirects and DNS rebinding. If an attacker can influence URLs passed to web_crawl(), directly or through an agent/tool workflow, they can cause the PraisonAI host to fetch loopback, private-network, or cloud metadata endpoints reachable from that host, with the response body returned in the web_crawl() result. This issue has been fixed in version 1.6.58.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Source: CVE Program / CVE List V5
Vulnerability Title
Mervin Praison PraisonAI 竞争条件问题漏洞
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 1.6.58之前版本存在安全漏洞，该漏洞源于web_crawl工具仅对初始URL进行SSRF检查，存在验证与获取分离的竞争条件，可能通过HTTP重定向和DNS重绑定绕过保护，导致访问回环、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 < 1.6.58 -

II. Public POCs for CVE-2026-55524

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 10937 chars
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III. Intelligence Information for CVE-2026-55524

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Vendor Advisories for CVE-2026-55524 (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-2026-55523 7.7 HIGH PraisonAI has a`web_crawl` SSRF protection bypass via unchecked redirect targets

IV. Related Vulnerabilities

Same product: PraisonAI
Same vendor: MervinPraison
Same weakness: CWE-367

V. Comments for CVE-2026-55524

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