CVE-2026-14803

MEDIUMPre-NVD 6.5Trending — 4 sources updated this week
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.5Exploit: NoneExposed: 0

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

Mojo::JSON versions before 9.47 for Perl allow memory exhaustion via unbounded recursion in the pure-Perl decoder.

The pure-Perl decode path (_decode_value dispatching to _decode_array and _decode_object) recurses with no depth limit, so a small deeply nested JSON document can consume excessive memory.

This path is the default when Cpanel::JSON::XS is not installed or MOJO_NO_JSON_XS=1 is set; the Cpanel::JSON::XS fast path is not affected.

Any caller that decodes an untrusted JSON body, for example Mojo::Message::json reached through $c->req->json, can exhaust process memory and cause denial of service.

CVSS v3
6.5
EG Score
0.0(none)
EPSS
8.4%
KEV
Not listed

Published

July 6, 2026

Last Modified

July 6, 2026

References (3)

Vendor Advisories for CVE-2026-14803(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 7× in last 7d / 7× 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. 2026-07-06 19:06 UTCMITRE cvelistV5CVSS v3 → 6.5 · severity → MEDIUM
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 06:34 UTCNVD update
  4. 2026-07-06 05:52 UTCMITRE cvelistV5
  5. 2026-07-06 02:38 UTCNVD update
  6. 2026-07-06 01:55 UTCEG score recompute
  7. 2026-07-06 01:54 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-14803?
CVE-2026-14803 is a medium vulnerability published on July 6, 2026. Mojo::JSON versions before 9.47 for Perl allow memory exhaustion via unbounded recursion in the pure-Perl decoder. The pure-Perl decode path (decodevalue dispatching to decodearray and decodeobject) recurses with no depth limit, so a small deeply nested JSON document can consume excessive memory.…
When was CVE-2026-14803 disclosed?
CVE-2026-14803 was first published in the National Vulnerability Database on July 6, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-14803 actively exploited?
CVE-2026-14803 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 8.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-14803?
CVE-2026-14803 has a CVSS v3.1 base score of 6.5 (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-2026-14803?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-14803, 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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