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Fencer Vulns
medium 6.9

CVE-2026-41682 json

pupnp: Port truncation via atoi() cast in parse_uri() allows SSRF port confusion

published 2026-05-08 6 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-28846

cvss
6.9
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 28%
public exploits
0
none known

Summary

pupnp is an SDK for development of UPnP device and control point applications. Prior to version 1.18.5, pupnp is vulnerable to SRRF port confusion due to port truncation via atoi() cast in parse_uri(). This issue has been patched in version 1.18.5.

Patch / fix

  • libupnp_project libupnp 1.18.5
  • pupnp_project pupnp 1.18.5
  • pupnp Debian 13 1:1.14.20-1+deb13u1
  • pupnp Debian 14 1:1.14.31-1

debian advisories DEBIAN-CVE-2026-41682

  • libupnp openSUSE Tumbleweed 1.18.5-1.1

opensuse advisories openSUSE-SU-2026:10641-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-41682 updated cvss 6.5

pupnp: pupnp: Server-Side Request Forgery due to port truncation

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
5 mo ago

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/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

Affected products

  • pupnp pupnp

Classification

Weakness
  • CWE-195 Signed to Unsigned Conversion Error
  • CWE-918 Server-Side Request Forgery

References

Sources

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.