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Vulnerability record · CVE-2021-39293 · published 24 January 2022

CVE-2021-39293: Golang go allocation without limits vulnerability

Golang · Go

In archive/zip in Go before 1.16.8 and 1.17.x before 1.17.1, a crafted archive header (falsely designating that many files are present) can cause a NewReader or OpenReader panic. NOTE: this issue exists because of an incomplete fix for CVE-2021-33196.

7.5 CVSS 3.1 High EPSS 6.9% · top 6.1% CWE-770 · Allocation without limits
7.5CVSS 3.1 base score, v2 5.0
6.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

In archive/zip in Go before 1.16.8 and 1.17.x before 1.17.1, a crafted archive header (falsely designating that many files are present) can cause a NewReader or OpenReader panic. NOTE: this issue exists because of an incomplete fix for CVE-2021-33196.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
https://groups.google.com/g/golang-announce/c/dx9d7IOseHw Issue TrackingRelease NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/04/msg00021.html
https://security.netapp.com/advisory/ntap-20220217-0009/ Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
https://groups.google.com/g/golang-announce/c/dx9d7IOseHw Issue TrackingRelease NotesThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/04/msg00021.html
https://security.netapp.com/advisory/ntap-20220217-0009/ Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-39293), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.