Sipeed PicoClaw Guarded Web Fetch Flow web.go WebFetchTool.Execute server-side request forgery

published 2026-07-10 4 mo ago modified 2026-10-25 14 d ago also EUVD-2026-42757

cvss: 6.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits: 0; none known

A security flaw has been discovered in Sipeed PicoClaw up to 0.2.9. Affected by this vulnerability is the function WebFetchTool.Execute of the file pkg/tools/integration/web.go of the component Guarded Web Fetch Flow. The manipulation results in server-side request forgery. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The reported GitHub issue was closed automatically due to inactivity.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 3 mo ago (2026-07-14)

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/sipeed/picoclaw/issues/3078 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CNA	3.1	6.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
CNA	3.0	6.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
CNA	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
CNA	4.0	2.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	6.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CNA	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

Sipeed PicoClaw

Classification

Weakness

CWE-918 Server-Side Request Forgery

References

github.com /sipeed/picoclaw/issues/3078
exploit, issue-tracking
vuldb.com /vuln/377257
vdb-entry, technical-description
vuldb.com /vuln/377257/cti
signature, permissions-required
vuldb.com /cve/CVE-2026-15317
third-party-advisory
vuldb.com /submit/852877
third-party-advisory
github.com /sipeed/picoclaw/
product

Sources

CVE List CVE-2026-15317
NVD CVE-2026-15317

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary