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Fencer Vulns
medium 5.5

CVE-2021-30471 json

A flaw was found in PoDoFo 0.9.7.

published 2021-05-26 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-17394

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

A flaw was found in PoDoFo 0.9.7. An uncontrolled recursive call in PdfNamesTree::AddToDictionary function in src/podofo/doc/PdfNamesTree.cpp can lead to a stack overflow.

Patch / fix

  • libpodofo Debian 14, Debian 13, Debian 12 0.9.8+dfsg-1

debian advisories DEBIAN-CVE-2021-30471

  • libpodofo Ubuntu Pro 20.04 LTS 0.9.6+dfsg-5ubuntu0.1~esm1
  • libpodofo Ubuntu Pro 22.04 LTS 0.9.7+dfsg-3ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2021-30471

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

  • podofo SLE Module for Package Hub 15 SP7 0.9.6-150300.3.18.1

suse advisories SUSE-SU-2026:4311-1

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-2021-30471 updated cvss 6.5

podofo: uncontrolled recursive call in PdfNamesTree::AddToDictionary function in src/podofo/doc/PdfNamesTree.cpp can lead to a stack overflow

  • 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

0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1947441 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

  • n/a podofo

Classification

Weakness

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.