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CVE-2026-33936

The `ecdsa` PyPI package is a pure Python implementation of ECC (Elliptic Curve Cryptography) with support for ECDSA (Elliptic Curve Digital Signature Algorithm), EdDSA (Edwards-curve Digital Signature Algorithm) and ECDH (Elliptic Curve Diffie-Hellman). Prior to version 0.19.2, an issue in the low-level DER parsing functions can cause unexpected exceptions to be raised from the public API functions. `ecdsa.der.remove_octet_string()` accepts truncated DER where the encoded length exceeds the ava
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0ccaeddfed71b4a4876a11c0884dd3512210d1c7badd35bf6ad8957de0c334fb
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e1a8363866267de8e2e88170fb72cfce3bb4deab8fc2d85df1b9dcd571ea0fd9 · sha256:d88f922f69fb803f… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-130","description":"CWE-130: Improper Handling of Length Parameter Inconsistency","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e1a8363866267de8e2e88170fb72cfce3bb4deab8fc2d85df1b9dcd571ea0fd9 · sha256:d88f922f69fb803f… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"python-ecdsa","vendor":"tlsfuzzer","versions":[{"status":"affected","version":"< 0.19.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:e1a8363866267de8e2e88170fb72cfce3bb4deab8fc2d85df1b9dcd571ea0fd9 · sha256:d88f922f69fb803f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:e1a8363866267de8e2e88170fb72cfce3bb4deab8fc2d85df1b9dcd571ea0fd9 · sha256:d88f922f69fb803f… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e1a8363866267de8e2e88170fb72cfce3bb4deab8fc2d85df1b9dcd571ea0fd9 · sha256:d88f922f69fb803f… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-130","description":"CWE-130: Improper Handling of Length Parameter Inconsistency","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:e1a8363866267de8e2e88170fb72cfce3bb4deab8fc2d85df1b9dcd571ea0fd9 · sha256:d88f922f69fb803f… · /containers/cna/problemTypes/1/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/tlsfuzzer/python-ecdsa/commit/bd66899550d7185939bf27b75713a2ac9325a9d3","tags":["x_refsource_MISC"],"url":"https://github.com/tlsfuzzer/python-ecdsa/commit/bd66899550d7185939bf27b75713a2ac9325a9d3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e1a8363866267de8e2e88170fb72cfce3bb4deab8fc2d85df1b9dcd571ea0fd9 · sha256:d88f922f69fb803f… · /containers/cna/references/1
{"name":"https://github.com/tlsfuzzer/python-ecdsa/releases/tag/python-ecdsa-0.19.2","tags":["x_refsource_MISC"],"url":"https://github.com/tlsfuzzer/python-ecdsa/releases/tag/python-ecdsa-0.19.2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e1a8363866267de8e2e88170fb72cfce3bb4deab8fc2d85df1b9dcd571ea0fd9 · sha256:d88f922f69fb803f… · /containers/cna/references/2
{"name":"https://github.com/tlsfuzzer/python-ecdsa/security/advisories/GHSA-9f5j-8jwj-x28g","tags":["x_refsource_CONFIRM"],"url":"https://github.com/tlsfuzzer/python-ecdsa/security/advisories/GHSA-9f5j-8jwj-x28g"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:e1a8363866267de8e2e88170fb72cfce3bb4deab8fc2d85df1b9dcd571ea0fd9 · sha256:d88f922f69fb803f… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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