CVE catalog

CVE-2020-19909

curl: CVE-2020-19909

Severity: Low · CVSS 3.3CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Published: Aug 22, 2023, 7:16:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.37% · Oct 25, 2026

Integer overflow vulnerability in tool_operate.c in curl 7.65.2 via a large value as the retry delay. NOTE: many parties report that this has no direct security impact on the curl user; however, it may (in theory) cause a denial of service to associated systems or networks if, for example, --retry-delay is misinterpreted as a value much smaller than what was intended. This is not especially plausible because the overflow only happens if the user was trying to specify that curl should wait weeks (or longer) before trying to recover from a transient error.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	curl	sid	`8.23.0-1`	fixed
Debian	curl	forky	`8.22.0-1`	fixed
Debian	curl	trixie	`8.14.1-2+deb13u5`	fixed
Debian	curl	trixie-security	`8.14.1-2+deb13u7`	fixed
Debian	curl	bookworm	`7.88.1-10+deb12u15`	fixed
Debian	curl	bookworm-security	`7.88.1-10+deb12u5`	fixed
Cpe	curl	Not reported	Not reported	unknown

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	curl	source	sid	`7.66.0-1`	unimportant	Not reported	Not reported
Debian	curl	source	forky	`7.66.0-1`	unimportant	Not reported	Not reported
Debian	curl	source	trixie	`7.66.0-1`	unimportant	Not reported	Not reported
Debian	curl	source	bookworm	`7.66.0-1`	unimportant	Not reported	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[curl]Unknown
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
[libcurl3-gnutls]Unknown
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
[libcurl3-nss]Unknown
Source package: [curl]
Details (4)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
[libcurl4]Unknown
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
[libcurl4-doc]Unknown
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · all · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u15 · all · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · all · bookworm-backports
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · all · bookworm-backports
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · all · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · all · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
[libcurl4-gnutls-dev]Unknown
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
[libcurl4-nss-dev]Unknown
Source package: [curl]
Details (4)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
[libcurl4-openssl-dev]Unknown
Source package: [curl]
Details (6)
- 7.88.1-10+deb12u15 · amd64 · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u15 · arm64 · bookworm
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · amd64 · bookworm-backports
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 8.14.1-2+deb13u2~bpo13+1 · arm64 · bookworm-backports
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · amd64 · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm
- 7.88.1-10+deb12u5 · arm64 · bookworm-security
  Fixed · Fixed: 7.66.0-1
  dsa · curl · debian · bookworm

Observed: Oct 23, 2026, 5:48:56 PM UTC

References

[CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]