Botan is a C++ cryptography library. X.509 certificates can identify elliptic curves using either an object identifier or using explicit encoding of the parameters. Prior to 3.5.0 and 2.19.5, checking name constraints in X.509 certificates is quadratic in the number of names and name constraints. An attacker who presented a certificate chain which contained a very large number of names in the SubjectAlternativeName, signed by a CA certificate which contained a large number of name constraints, could cause a denial of service. The problem has been addressed in Botan 3.5.0 and a partial backport has also been applied and is included in Botan 2.19.5.
CVE-2024-34702
This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 36% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
A fix is available — apply it.
- CVSS v3
- 5.3
- EG Score
- 5.3(medium)
- EPSS
- 53.7%
- KEV
- Not listed
Published
July 8, 2024
Last Modified
April 15, 2026
References (26)
- security-advisories@githubhttps://github.com/randombit/botan/commit/21dccc8fef18c165ba3301d850ac61521f85637e
- security-advisories@githubhttps://github.com/randombit/botan/commit/39535f13c322f56aa3da2f44b2b6abb8619a82ac
- security-advisories@githubhttps://github.com/randombit/botan/commit/477822a2d10f02d8ba46c9d8a5132f25843f5cc1
- security-advisories@githubhttps://github.com/randombit/botan/commit/7606d70d3a2ac7114476ec2651ca0243c4536fdf
- security-advisories@githubhttps://github.com/randombit/botan/commit/c3264821b9f6286ee4e6e3e06826f6b7177e6d41
- security-advisories@githubhttps://github.com/randombit/botan/commit/ff704b12e6fa351aaedd07bffdc91722e84586b8
- security-advisories@githubhttps://github.com/randombit/botan/pull/4034
- security-advisories@githubhttps://github.com/randombit/botan/pull/4045
- security-advisories@githubhttps://github.com/randombit/botan/pull/4047
- security-advisories@githubhttps://github.com/randombit/botan/pull/4052
- security-advisories@githubhttps://github.com/randombit/botan/pull/4186
- security-advisories@githubhttps://github.com/randombit/botan/pull/4187
- security-advisories@githubhttps://github.com/randombit/botan/security/advisories/GHSA-5gg9-hqpr-r58j
- af854a3a-2127-422b-91ae-364da2661108https://github.com/randombit/botan/commit/21dccc8fef18c165ba3301d850ac61521f85637e
- af854a3a-2127-422b-91ae-364da2661108https://github.com/randombit/botan/commit/39535f13c322f56aa3da2f44b2b6abb8619a82ac
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| ubuntu | python3-botan (2.19.3+dfsg-1ubuntu2.1) @ oracular | 2026-05-22 | ubuntu |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
All Vendor Advisories
(1)
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Data Freshness Timeline
(refreshed 11× in last 7d / 43× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-11 08:26 UTCEPSS rescore
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Frequently asked(5)
What is CVE-2024-34702?
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