CVE-2026-62296Patch

LOWCVSS 7.5 · HIGH

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

NVD description

HAPI FHIR is a complete implementation of the HL7 FHIR standard for healthcare interoperability in Java. Prior to 6.9.11, XhtmlParser.java imposes no maximum element nesting depth, so a deeply nested text.div narrative triggers unbounded recursion between parseElementInner() and parseElement(), raising a StackOverflowError. An attacker who can submit FHIR resources containing such narratives can thus crash a parsing or validation worker thread, affecting validator services and any application that parses attacker-supplied FHIR JSON or XML. This issue is fixed in version 6.9.11.

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0.5/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-20CWE-400CWE-674

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 assets1 URL

By indicator

https://www.valtersit.com/cve/CVE-2026-62296

Full discourse1 post

Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters46d
Patch
CVE-2026-62296 - DoS in HAPI FHIR via deeply nested XHTML. Unbounded recursion crashes parser threads. CVSS 7.5. Fixed in 6.9.11. Update now. #CVE #HAPI #infosec https://www.valtersit.com/cve/CVE-2026-62296 #infosec #cybersecurity #CVE #Linux #infosec #infosec #devsecops #devops #developer #sysadmin #100daysofcode #git #github #gitlab #redteam #blueteam #ethicalhacker #ethicalhacking #cybersecurityawareness #cybersecurity #cybersecuritynews #cybersecuritytips #python #hacker #linux #kali #ubuntu #debian
Post summary
The tweet discloses a DoS vulnerability in HAPI FHIR, details its technical nature and CVSS score, and urges users to apply the fix released in version 6.9.11.
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