CVE-2026-88383

UNRATEDCVSS · not yet scoredTrending — 3 sources updated this week
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EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • No CVSS published and no exploitation signals yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS v2: —Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

libical 4.0.6 contains an incompatible function pointer in icalparameter_string_to_kind(). When parsing iCalendar data containing a parameterized property, the function passes icalparameter_compare_kind_map() to bsearch() through an incompatible comparator function pointer type. bsearch() invokes the callback through the mismatched type, resulting in undefined behavior and process termination, leading to denial of service.

CVSS v3
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EchelonGraph score
Not yet assessedNo source has published severity data for this CVE yet — no CVSS score from NVD or a CNA, no GitHub advisory, and it is not in CISA KEV. This is not a rating of zero; we cannot assess it yet.
EG Score
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EG Risk
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EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

Published

September 24, 2026

Last Modified

September 24, 2026

References (3)

Vendor Advisories for CVE-2026-88383(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libical33.0.16-1 ... 3.0.20-3 (12 versions)
  • every version on: no fix on record
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Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libical33.0.20-1, 3.0.20-2, 3.0.20-3
  • every version on: no fix on record
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Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libical33.0.20-1, 3.0.20-2, 3.0.20-3
  • every version on: no fix on record
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Data Freshness Timeline

(refreshed 7× in last 7d / 15× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-03 23:22 UTCGHSA enrichment
  3. 2026-10-01 19:51 UTCEPSS rescore
  4. 2026-09-30 22:41 UTCEG score recompute
  5. 2026-09-30 22:41 UTCGHSA enrichment
  6. 2026-09-30 15:04 UTCEPSS rescore
  7. 2026-09-28 13:52 UTCEPSS rescore
  8. 2026-09-27 22:00 UTCEG score recompute
  9. 2026-09-27 22:00 UTCGHSA enrichment
  10. 2026-09-27 13:48 UTCEPSS rescore
  11. 2026-09-26 15:59 UTCEPSS rescore
  12. 2026-09-24 21:17 UTCGHSA enrichment
  13. 2026-09-24 17:33 UTCNVD update
  14. 2026-09-24 16:37 UTCEG score recompute
  15. 2026-09-24 16:36 UTCMITRE cvelistV5first tracked

Frequently asked(4)

What is CVE-2026-88383?
CVE-2026-88383 is a publicly disclosed vulnerability published on September 24, 2026. libical 4.0.6 contains an incompatible function pointer in icalparameterstringtokind(). When parsing iCalendar data containing a parameterized property, the function passes icalparametercomparekindmap() to bsearch() through an incompatible comparator function pointer type. bsearch() invokes the…
When was CVE-2026-88383 disclosed?
CVE-2026-88383 was first published on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-88383 actively exploited?
CVE-2026-88383 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
How do I remediate CVE-2026-88383?
No fix for CVE-2026-88383 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-88383 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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