#249 chore(deps): bump pyasn1 from 0.6.3 to 0.6.5

Sourced from pyasn1's releases.

Release 0.6.5

Revision 0.6.5, released 26-10-2026

• GHSA-mm57-4v3p-rchx: Decoded binary REAL mantissas in linear time instead of repeatedly shifting a growing integer and slicing the remaining bytes (thanks for reporting, manus-use, manus-pi, ucsurf, adriank31)
• GHSA-2qm8-x737-gmw5: Reassembled constructed BIT STRING fragments in linear time while preserving their decoded bit values, including intermediate fragment padding (thanks for reporting, manus-use)
• GHSA-9m75-vc3g-4x39: Reassembled constructed OCTET STRING and character-string fragments and indefinite-length ANY content in linear time. Nested constructed OCTET STRING fragments now contribute their decoded octets (thanks for reporting, alimony, manus-pi, adriank31)
• GHSA-fm9c-5rcf-2q5p: Bounded schemaless container type tracking after two distinct tag sets to prevent quadratic CPU use from colliding long tag IDs (thanks for reporting, droideck)

Release 0.6.4

This is a security release.

• CVE-2026-59885 (GHSA-8ppf-4f7h-5ppj): Fixed quadratic time complexity in the OBJECT IDENTIFIER and RELATIVE-OID decoders. A small crafted substrate encoding many arcs could consume excessive CPU.
• CVE-2026-59884 (GHSA-m4p7-r5rc-7g4j): Limited BER long-form tag IDs to 20 octets (140 bits). Unbounded tag IDs allowed a crafted substrate to consume excessive CPU and memory.
• CVE-2026-59886 (GHSA-hm4w-wwcw-mr6r): Fixed excessive memory and CPU consumption in Real.__float__() for values with large base-10 exponents.
• Pinned PyPI publish GitHub Action to an immutable commit.

All changes are noted in the CHANGELOG.

Sourced from pyasn1's changelog.

Revision 0.6.5, released 26-10-2026

• GHSA-mm57-4v3p-rchx: Decoded binary REAL mantissas in linear time instead of repeatedly shifting a growing integer and slicing the remaining bytes (thanks for reporting, manus-use, manus-pi, ucsurf, adriank31)
• GHSA-2qm8-x737-gmw5: Reassembled constructed BIT STRING fragments in linear time while preserving their decoded bit values, including intermediate fragment padding (thanks for reporting, manus-use)
• GHSA-9m75-vc3g-4x39: Reassembled constructed OCTET STRING and character-string fragments and indefinite-length ANY content in linear time. Nested constructed OCTET STRING fragments now contribute their decoded octets (thanks for reporting, alimony, manus-pi, adriank31)
• GHSA-fm9c-5rcf-2q5p: Bounded schemaless container type tracking after two distinct tag sets to prevent quadratic CPU use from colliding long tag IDs (thanks for reporting, droideck)

Revision 0.6.4, released 08-07-2026

• CVE-2026-59885 (GHSA-8ppf-4f7h-5ppj): Fixed quadratic time complexity in the OBJECT IDENTIFIER and RELATIVE-OID decoders. A small crafted substrate encoding many arcs could consume excessive CPU. Arcs are now accumulated in linear time; decoded values are unchanged (thanks for reporting, tynus2)
• CVE-2026-59884 (GHSA-m4p7-r5rc-7g4j): Limited BER long-form tag IDs to 20 octets (140 bits), matching the OID arc limit introduced in 0.6.2. Unbounded tag IDs allowed a crafted substrate to consume excessive CPU and memory; longer tag IDs are now rejected with PyAsn1Error. Also fixed Tag and TagSet repr() failing on huge tag (thanks for reporting, mikeappsec) IDs due to the integer-to-string conversion limit (Python 3.11+)
• CVE-2026-59886 (GHSA-hm4w-wwcw-mr6r): Fixed excessive memory and CPU consumption in Real.float() for values with large base-10 exponents. Conversion no longer materializes huge intermediate integers; values too large to represent as a Python float raise OverflowError promptly, and prettyPrint() renders them as '' as before. Also fixed base-10 mantissa normalization to use exact integer arithmetic; mantissas larger than 2**53 could previously lose precision through float division (thanks for reporting, gvozdila)
• Pinned PyPI publish GitHub Action to an immutable commit [pr #113](pyasn1/pyasn1#113)

• 5d16736 Prepare release 0.6.5
• a36e3a3 Fix quadratic CPU use in schemaless container decoding
• 4ce0079 Remove quadratic constructed OCTET STRING and ANY reassembly
• 73ba7b0 Remove quadratic constructed BIT STRING reassembly
• ce3ec33 Remove quadratic binary REAL mantissa decoding
• 72e4803 Prepare release 0.6.4
• 0c19eeb Pin PyPI publish action to immutable commit (#113)
• 45bdb19 Merge commit from fork
• 628e36e Merge commit from fork
• e60c691 Merge commit from fork
• See full diff in compare view

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)
  You can disable automated security fix PRs for this repo from the Security Alerts page.