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-2020-8177

CVE-2020-8177HIGH

n/a https://github.com/curl/curl — curl 7.20.0 through 7.70.0 is vulnerable to improper restriction of names for files and other resources that can lead too overwriting a l…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  U  H  H  H    7.8   .0129   69.7     —

AFFECTED
  Product                       Versions                               Fixed
  https://github.com/curl/curl  curl 7.20.0 to and including 7.70.0 –  —

TIMELINE
  Jan 28  Reserved by hackerone
  Dec 14  Published (CNA: hackerone)
  Oct 14  EXPLOIT PUBLISHED — CVE-2020-8177 (https://github.com/curl/curl). Public exploit reference added.

CWE-74, CWE-99 · CNA: hackerone · CVSS v3.1 · 7 references · NVD status: Modified

Description

curl 7.20.0 through 7.70.0 is vulnerable to improper restriction of names for files and other resources that can lead too overwriting a local file when the -J flag is used.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
January 28, 2020	Reserved	Reserved by hackerone
December 14, 2020	Published	Published (CNA: hackerone)
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2020-8177 (https://github.com/curl/curl). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	https://github.com/curl/curl	—	curl 7.20.0 to and including 7.70.0	—

Weaknesses

CWE-74 · CWE-99

References (7)

https://cert-portal.siemens.com/productcert/html/ssa-389290.html
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf [Patch, Third Party Advisory]
https://curl.se/docs/CVE-2020-8177.html [Vendor Advisory]
https://hackerone.com/reports/887462 [Exploit, Third Party Advisory]
https://www.debian.org/security/2021/dsa-4881 [Third Party Advisory]
https://www.oracle.com/security-alerts/cpujan2022.html [Patch, Third Party Advisory]

Authoritative record: CVE-2020-8177 at cve.org

Weaknesses: CWE-74 · CWE-99

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-8177 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.