CVE-2026-57433

CRITICALPre-NVD 9.8Trending — 4 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

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

Storable versions before 3.41 for Perl have a signed integer overflow when deserializing a crafted SX_HOOK record.

retrieve_hook_common reads a signed 32-bit item count from an SX_HOOK record and calls av_extend with that count plus one. A count of I32_MAX wraps the addition to a negative value.

A crafted blob passed to thaw or retrieve triggers the overflow; av_extend receives the negative count and dies with a panic, terminating the deserialization.

CVSS v3
9.8
EG Score
0.0(none)
EPSS
26.7%
KEV
Not listed

Published

July 13, 2026

Last Modified

July 14, 2026

Advisory Details (1)

Auto-updated Jul 14, 2026
No patch confirmed yet.
generic
https://github.com/Perl/perl5/commit/e4f681784bcdeaa91ff02a2fa4cdcae5c46779d7.patch

Vendor Advisories for CVE-2026-57433(1)

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

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 10× 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. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 02:00 UTCEPSS rescore
  4. 2026-07-15 02:00 UTCEPSS rescore
  5. 2026-07-14 13:45 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  6. 2026-07-13 20:25 UTCNVD update
  7. 2026-07-13 20:07 UTCMITRE cvelistV5
  8. 2026-07-13 18:08 UTCNVD update
  9. 2026-07-13 16:23 UTCEG score recompute
  10. 2026-07-13 16:22 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-57433?
CVE-2026-57433 is a critical vulnerability published on July 13, 2026. Storable versions before 3.41 for Perl have a signed integer overflow when deserializing a crafted SX_HOOK record. retrievehookcommon reads a signed 32-bit item count from an SXHOOK record and calls avextend with that count plus one. A count of I32_MAX wraps the addition to a negative value. A…
When was CVE-2026-57433 disclosed?
CVE-2026-57433 was first published in the National Vulnerability Database on July 13, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57433 actively exploited?
CVE-2026-57433 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 26.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-57433?
CVE-2026-57433 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 0.0.
How do I remediate CVE-2026-57433?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57433, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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