High 7.5Published Mar 20, 2020

CVE-2019-14855A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm.

Updated under an hour ago (Nov 2, 2026, 12:23 AM ET)

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It affects gnupg and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18.

CVSS: 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-326
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

gnupg gnupg gnupg:gnupg	before 2.2.18	NVD
fedoraproject fedora fedoraproject:fedora	30; 31	NVD
canonical ubuntu_linux canonical:ubuntu_linux	18.04	NVD

References

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14855	issue-tracking, third-party-advisory
https://dev.gnupg.org/T4755	vendor-advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2019q4/000442.html	mailing-list, release-notes, vendor-advisory
https://rwc.iacr.org/2020/slides/Leurent.pdf	exploit, third-party-advisory
https://usn.ubuntu.com/4516-1/	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.