boxscore/security
CVE · referencelatest edition

Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2021-35517

CVE-2021-35517HIGH
Apache Commons Compress 1.1 to 1.20 denial of service vulnerability
  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  N  H    7.5   .1061   95.7     —
AFFECTED
  Product                  Versions  Fixed
  Apache Commons Compress  1.1 –     —
TIMELINE
  Jun 27  Reserved by apache
  Jul 13  Published (CNA: apache)
  Oct 8   ENRICHED — CVE-2021-35517 (Apache Software Foundation Apache Commons Compress). Received CVSS 7.5 and CPE data from NVD.
CWE-770, CWE-130 · CNA: apache · CVSS v3.1 · 22 references · NVD status: Modified

Description

When reading a specially crafted TAR archive, Compress can be made to allocate large amounts of memory that finally leads to an out of memory error even for very small inputs. This could be used to mount a denial of service attack against services that use Compress' tar package.

Lifecycle

Complete event history — 3 events, chronological
DateEventDetail
June 27, 2021ReservedReserved by apache
July 13, 2021PublishedPublished (CNA: apache)
October 8, 2026ENRICHEDENRICHED — CVE-2021-35517 (Apache Software Foundation Apache Commons Compress). Received CVSS 7.5 and CPE data from NVD.

Affected

Affected products and packages — 1 row
VendorProduct / PackageEcosystemVersion introducedFixed
Apache Software FoundationApache Commons Compress—1.1—

Weaknesses

CWE-770 · CWE-130

References (22)

Related

Authoritative record: CVE-2021-35517 at cve.org

Vendors: apache

Weaknesses: CWE-770 · CWE-130

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-35517 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.