Update unsound DrainFilter and RString::retain

published 2020-12-21 5 y ago modified 2026-06-17 4 mo ago also CVE-2020-36213 , GHSA-vq23-5h4f-vwpv , GHSA-wqxc-qrq4-w5v4 , RUSTSEC-2020-0105 , EUVD-2021-1901

cvss: 7.5; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.4%; EPSS 1.4% chance of exploitation in 30 days, percentile 73%
public exploits: 0; none known

An issue was discovered in the abi_stable crate before 0.9.1 for Rust. DrainFilter lacks soundness because of a double drop.

Patch / fix

fixed in 2

crates.io abi_stable 0.9.1
abi_stable_project abi_stable 0.9.1

Exploit prediction

1.43% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

rustsec.org https://rustsec.org/advisories/RUSTSEC-2020-0105.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:N/A:P
GitHub	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
crates.io	abi_stable	<0.9.1 >=0.0.0-0, <0.9.1	0.9.1

Classification

Weakness

CWE-172 Improper Encoding or Decoding of Data
CWE-672 Operation on a Resource after Expiration or Release

References

rustsec.org /advisories/RUSTSEC-2020-0105.html
web, exploit, vendor-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2020-36213
advisory
github.com /rodrimati1992/abi_stable_crates/issues/44
web, report
nvd.nist.gov /vuln/detail/CVE-2020-36212
advisory
crates.io /crates/abi_stable
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary