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MediumFix available

stringprep.map_table_b2() deviates from RFC 3454 Table B.2

Type: advisorySource: OSVRisk context updated1 source record

The "stringprep" module didn't process characters from RFC 3454 tables B.2 or B.3 correctly: the latest Unicode codepoint attributes were used instead of the specified Unicode 3.2.0. This behavior would cause mismatches when processing domain names using IDNA 2003 (the "idna" codec) and the in_table_b2() function of the "stringprep" module. This only affects domain names containing characters that were not previously registered or had their Unicode attributes such as case-folding behavior updated since Unicode 3.2.0.

Announced Source revision 2
Original source ↗
CVE context updated. The publisher announcement is unchanged.

BIT-libpython-2026-17084

Primary source · Revision 2

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:BIT-libpython-2026-17084

libpython

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
3.10.22

Source reference: /affected/0/ranges

3.11.17

Source reference: /affected/0/ranges

3.12.15

Source reference: /affected/0/ranges

3.13.16

Source reference: /affected/0/ranges

3.14.8

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "3.10.22"
          },
          {
            "introduced": "3.11.0"
          },
          {
            "fixed": "3.11.17"
          },
          {
            "introduced": "3.12.0"
          },
          {
            "fixed": "3.12.15"
          },
          {
            "introduced": "3.13.0"
          },
          {
            "fixed": "3.13.16"
          },
          {
            "introduced": "3.14.0"
          },
          {
            "fixed": "3.14.8"
          }
        ]
      }
    ],
    "package": {
      "name": "libpython",
      "purl": "pkg:bitnami/libpython",
      "ecosystem": "Bitnami"
    },
    "severity": [
      {
        "type": "CVSS_V4",
        "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
      }
    ],
    "database_specific": {
      "source": "https://github.com/bitnami/vulndb/tree/main/data/libpython/BIT-libpython-2026-17084.json"
    }
  }
]
Related CVEs
CVE-2026-17084

Source reference: /aliases

Publisher severity

medium

Source reference: /database_specific/severity

Linked CVE context

These ratings describe the referenced vulnerabilities and products. They are not a severity rating for every application using this dependency.

CVE-2026-17084 · Medium

CPython

CVE-2026-17084 · Medium

python

Event
#84090 · Revision 2
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Publisher date
Read the original announcement