CVE-2026-58226
- Source
- https://cve.org/CVERecord?id=CVE-2026-58226
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-58226.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-58226
- Aliases
-
- EEF-CVE-2026-58226
- GHSA-jj2p-32j7-whj2
- Published
- 2026-07-06T09:03:47.374Z
- Modified
- 2026-07-15T01:49:04.146144890Z
- Severity
-
- 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Unauthenticated denial-of-service via unbounded HPACK integer decoding in hpax
- Details
-
Inefficient Algorithmic Complexity vulnerability in elixir-mint hpax allows unauthenticated denial-of-service via unbounded HPACK integer decoding.
hpax decodes HPACK variable-length integers with no upper bound on the decoded value or the number of continuation octets. 'Elixir.HPAX.Types':decoderemaininginteger/3 accumulates the integer as int + (value <<< m), shifting by 7 more bits for each continuation octet and stopping only on a terminating octet or truncated input, never because the integer grew too large. Because BEAM integers are arbitrary precision, a run of N continuation octets builds an O(N)-bit bignum and re-adds into an ever-larger bignum on each step, so the total decoding cost is superlinear (about O(N^2)). An unauthenticated attacker who can send an HTTP/2 header block to a server using this decoder (reached through the 'Elixir.HPAX':decode/2 entry point) can supply a small header block that forces a large, attacker-controlled amount of CPU (and transient memory), a denial-of-service amplification.
This issue affects hpax from 0.1.1 before 1.0.4.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58226.json", "cwe_ids": [ "CWE-407" ], "unresolved_ranges": [ { "extracted_events": [ { "introduced": "56db437a7e2c515e3bdd770ac7947b02cd2390d0" }, { "fixed": "1ba4bb2dc91e80089cf89c73970ac3ded76f17eb" } ], "source": "AFFECTED_FIELD" } ], "cna_assigner": "EEF" }- References
-
- https://cna.erlef.org/cves/CVE-2026-58226.html
- https://github.com
- https://osv.dev/vulnerability/EEF-CVE-2026-58226
- https://repo.hex.pm
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58226.json
- https://github.com/elixir-mint/hpax/security/advisories/GHSA-jj2p-32j7-whj2
- https://nvd.nist.gov/vuln/detail/CVE-2026-58226
- https://github.com/elixir-mint/hpax/commit/1ba4bb2dc91e80089cf89c73970ac3ded76f17eb
- https://github.com/elixir-mint/hpax