[NEW] [medium] CPython: Multiple vulnerabilities

mediumCVE-2026-17084 CVE-2026-15806

A remote, anonymous attacker can exploit multiple vulnerabilities in CPython to disclose information and to achieve unspecified impacts.

CSIRTS triage

vendor: CPython product: CPython Information disclosureOther

What: Multiple vulnerabilities in CPython allow remote information disclosure and unspecified impacts.
Who is affected: Systems running affected versions of CPython.
Urgency: Medium priority; information disclosure and unspecified impacts require timely patching.
Action: Apply CPython security updates addressing CVE-2026-17084 and CVE-2026-15806.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: medium
Published: 2026-08-19
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2924

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-170840.51% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 41% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-158060.36% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 30% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-17084	coverage & exploitation status	NVD · CVE.org
CVE-2026-15806	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for CPython

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

high[NEW] [high] CPython: Vulnerability allows Denial of Servicecert-bund · 2026-08-19
high[UPDATE] [high] CPython: Multiple vulnerabilitiescert-bund · 2026-08-19
medium[UPDATE] [medium] CPython: Multiple vulnerabilitiescert-bund · 2026-08-19
medium[UPDATE] [medium] CPython: Vulnerability allows data manipulationcert-bund · 2026-08-19
low[UPDATE] [low] CPython: Vulnerability allows Denial of Servicecert-bund · 2026-08-19
medium[UPDATE] [medium] CPython: Vulnerability allows file manipulationcert-bund · 2026-08-13