CVE-2022-29185: totp-rs is a Rust library that permits the creation of 2FA authentification tokens per time-based one-time pas

Q: How do I fix CVE-2022-29185?

totp-rs: upgrade to 1.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2022-29185 being exploited?

CVE-2022-29185 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-29185 affect?

CVE-2022-29185 affects totp-rs. Severity is medium (CVSS 4.2). totp-rs is a Rust library that permits the creation of 2FA authentification tokens per time-based one-time password (TOTP). Prior to version 1.1.0, token comparison was not constant time, and could theorically be used to guess value of an T

Q: How urgent is CVE-2022-29185?

Priority 29/100. No elevated risk signals yet.

Routine

MEDIUM 4.2UPGRADE

CVE-2022-29185 is a medium-severity flaw (CVSS 4.2) affecting totp-rs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

totp-rs is a Rust library that permits the creation of 2FA authentification tokens per time-based one-time password (TOTP). Prior to version 1.1.0, token comparison was not constant time, and could theorically be used to guess value of an TOTP token, and thus reuse it in the same time window. The attacker would have to know the password beforehand nonetheless. Starting with patched version 1.1.0, the library uses constant-time comparison. There a

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.2 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-203, CWE-208
Published	2022-05-20
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: totp-rs project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-05-20 20:15 UTCPublished CVE record published
2026-06-17 04:39 UTCUpdated Record last modified

totp-rs project totp-rs UPGRADE

Affected: < 1.1.0

Fixed in: 1.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy totp-rs || rpm -q totp-rs || totp-rs --version

2. UPGRADE to 1.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade totp-rs

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade totp-rs

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-29185?

totp-rs: upgrade to 1.1.0. Exact commands for each OS are on this page.

Is CVE-2022-29185 being exploited?

CVE-2022-29185 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-29185 affect?

CVE-2022-29185 affects totp-rs. Severity is medium (CVSS 4.2). totp-rs is a Rust library that permits the creation of 2FA authentification tokens per time-based one-time password (TOTP). Prior to version 1.1.0, token comparison was not constant time, and could theorically be used to guess value of an T

How urgent is CVE-2022-29185?

Priority 29/100. No elevated risk signals yet.

References

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