[NEW] [medium] Red Hat Enterprise Linux (python-pillow): Multiple vulnerabilities allow denial of service

CSIRTS triage

What

Multiple vulnerabilities allow denial of service attacks.

Who is affected

Remote, anonymous attackers targeting installations of python-pillow on Red Hat Enterprise Linux.

Urgency

Remediation is medium urgency as the vulnerabilities can lead to service disruption.

Action

Update python-pillow to the latest version to mitigate the vulnerabilities.

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

Details

Source

CERT-Bund (BSI) Security Advisories (DE · national-cert · site)

Severity

medium

Published

2026-07-31

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-2026-2301

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-2026-540590.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all scored CVEs.
• Low exploitation riskCVE-2026-540600.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all scored CVEs.
• Low exploitation riskCVE-2026-553790.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all scored CVEs.
• Low exploitation riskCVE-2026-553800.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 34% of all scored CVEs.

Referenced CVEs

Same CVEs, other sources

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

• highCVE-2026-55380: Pillow is a Python imaging library. Prior to 12.3.0, PIL/GdImageFile.py GdImageFile._open() re…nvd
• highCVE-2026-55379: Pillow is a Python imaging library. Prior to 12.3.0, PIL/BdfFontFile.py bdf_char() read the BB…nvd
• highCVE-2026-54060: Pillow is a Python imaging library. Prior to 12.3.0, PIL/FontFile.py FontFile.compile() assemb…nvd
• highCVE-2026-54059: Pillow is a Python imaging library. Prior to 12.3.0, PIL/PcfFontFile.py _load_bitmaps() read g…nvd

Recent advisories for Red Hat Enterprise

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.

• highCVE-2026-18358: A flaw was found in gnome-remote-desktop as shipped in Red Hat Enterprise Linux. When the daem…nvd · 2026-07-31
• medium[NEW] [medium] Red Hat Enterprise Linux (go-billy): Vulnerability allows Denial of Servicecert-bund · 2026-07-31
• high[NEW] [high] Red Hat Enterprise Linux (sssd, glib, c-ares): Multiple vulnerabilitiescert-bund · 2026-07-31
• medium[NEW] [medium] Red Hat Enterprise Linux (libsolv, aardvark-dns): Multiple vulnerabilitiescert-bund · 2026-07-31
• medium[NEW] [medium] Red Hat Enterprise Linux (freeipmi): Vulnerability allows denial of servicecert-bund · 2026-07-31
• high[UPDATE] [high] Red Hat Enterprise Linux (openCryptoki, hplip, 389-ds-base): Multiple Vulnerabilitiescert-bund · 2026-07-31

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