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No exploitation reportedFix available

CVE-2023-49092

No exploitation reported by the sources we read.

  • Published2023-11-28
  • Fixed in0.10.0
  • WeaknessCWE-203 · CWE-385

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

RustCrypto/RSA is a portable RSA implementation in pure Rust. Due to a non-constant-time implementation, information about the private key is leaked through timing information which is observable over the network. An attacker may be able to use that information to recover the key. There is currently no fix available. As a workaround, avoid using the RSA crate in settings where attackers are able to observe timing information, e.g. local use on a non-compromised computer.

Timeline

dates in UTC
  1. 2023-11-2821:15CVE publishedNVD

Versions per branch

OSV · NVD
rsa
BranchAffectedFixed in
0.x≥ 0.0.0-0, < 0.10.00.10.0
0.9≤ 0.9.6no fix published
Rustcrypto rsa
BranchAffectedFixed in
—all versionsno fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • RustCrypto RSA
    Affected
    • = <= 0.9.5no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2023-12-14

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • atuinWolfiall versions · fixed in 18.10.0-r0
  • atuinChainguardall versions · fixed in 18.10.0-r0
  • cargo-audit-advisory-dbopenSUSE:Tumbleweedall versions · fixed in 20231219-1.1
  • denoWolfiall versions · fixed in 2.6.4-r1
  • denoChainguardall versions · fixed in 2.6.4-r1
  • rust-rsaUbuntu:26.10all versions · no fixed version listed
  • rust-rsaUbuntu:26.04:LTSall versions · no fixed version listed
  • rust-rsaUbuntu:25.10all versions · no fixed version listed

10 more package ranges on OSV.dev

Full record on NVD

Fix

  1. Update rsa to 0.10.0

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionnone2024-11-27
  • CNACVSS 3.15.9known since 2026-10-23
  • NVDCVSS 3.15.9read 2026-10-23
  • CNAweakness (CWE)CWE-385known since 2026-10-23
  • NVDweakness (CWE)CWE-203read 2026-10-23
  • FIRST EPSSEPSS score0.6 %2026-11-08
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryMODERATE2023-11-28

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2023-11-28
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-4grx-2x9w-596c GHSA-c38w-74pg-36hr

Frequently asked questions

What is CVE-2023-49092?

RustCrypto/RSA is a portable RSA implementation in pure Rust. Due to a non-constant-time implementation, information about the private key is leaked through timing information which is observable over the network. An attacker may be able to use that information to recover the key. There is currently no fix available. As a workaround, avoid using the RSA crate in settings where attackers are able to observe timing information, e.g. local use on a non-compromised computer.

Is CVE-2023-49092 actively exploited?

Active exploitation of CVE-2023-49092 has not been confirmed. Its EPSS score was 0.6% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-49092?

CVE-2023-49092 has a CVSS v3 base score of 5.9 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

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