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CVE-2026-7210 high CVSS 7.5

Vulnerability in libpython (CVE-2026-7210)

Summary

Vulnerability in libpython (CVE-2026-7210). Risk of unauthorized operations or information disclosure. Exploitable via xml.parsers.expat.

Original description

The description as published by the source.

xml.parsers.expat and xml.etree.ElementTree use insufficient entropy for Expat hash-flooding protection, which allows a crafted XML document to trigger hash flooding.\r\n\r\nFully mitigating this vulnerability requires both updating libexpat to 2.8.0 or later and applying this patch.

Source: GitHub Security Advisories (Global) NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-7210 has been found in libpython.
Attackers can target a specific entry point like xml.parsers.expat over the network to misuse the product.
Risk of unauthorized operations or information disclosure. CVSS score: 7.5/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "libpython CVE-2026-7210" on the vendor's site.

CVE-2026-7210 (libpython) — CWE-331 / CVSS v3 7.5
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Attack surface: xml.parsers.expat / xml.etree.ElementTree
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (CWE-331) exists in libpython. Attackers reach the vulnerable code path via xml.parsers.expat without authentication.

📍 Affected scope

Check the vendor advisory for the affected versions of libpython. Attack surface: xml.parsers.expat / xml.etree.ElementTree.

🔥 Severity

Severity: High (CVSS 7.5/10). Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to the patched release per vendor advisory.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'libpython' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'libpython' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で libpython を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

Bitnami libpython
[{"type":"SEMVER","events":[{"introduced":"0"}]}]
Bitnami python
[{"type":"SEMVER","events":[{"introduced":"0"}]}]
Bitnami python-min
[{"type":"SEMVER","events":[{"introduced":"0"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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