CVE-2026-55099Patch

LOW

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

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0.5/ 10 priority

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

Patch or workaround signal is available
1 mentions across 1 observed day

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 1 signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Patch

1100.0%

Referenced assets2 URLs

By indicator

Full discourse1 post

Open Source Security mailing list@oss_security91d
Patch
Plone: various security fixes 20260623 https://www.openwall.com/lists/oss-security/2026/06/23/9 including "Remote Code Execution via TALES Injection" CVE-2026-55099: icalendar: DoS https://www.openwall.com/lists/oss-security/2026/06/23/8 "a sub-kilobyte .ics file is enough to make a single equality check run for minutes or hang indefinitely"
Post summary
The post announces recent patches for Plone and discloses a denial‑of‑service flaw in icalendar that can be triggered with a small .ics file, indicating the availability of fixes for these CVEs.
00020361
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