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Fencer Intel
critical 9.1

CVE-2018-21245 json

Pound before 2.8 allows HTTP request smuggling, a related issue to CVE-2016-10711.

published 6y ago modified 4mo ago also EUVD-2018-13761

cvss
9.1
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits
0
none known

Summary

Pound before 2.8 allows HTTP request smuggling, a related issue to CVE-2016-10711.

Patch / fix

  • apsis pound 2.8
  • pound Debian 14, Debian 13 2.8-2

debian advisories DEBIAN-CVE-2018-21245

  • pound Ubuntu 16.04 LTS 2.6-6.1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2018-21245

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • pound openSUSE Tumbleweed 2.8-3.9

opensuse advisories openSUSE-SU-2024:11190-1

Is CVE-2018-21245 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2018-21245 updated cvss 5.8

Pound: request smuggling via fudged headers

  • 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

Exploit prediction

1.13% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:P/I:P/A:N

Classification

Weakness
  • CWE-444 Inconsistent Interpretation of HTTP Requests

References

Sources

Fencer Intel 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.