CVE-2026-62296

HIGHPre-NVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (42nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Elevated

Also known asEUVD-2026-54643 (ENISA EUVD)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 7.5Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
65
EG Risk 65/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
42nd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-12). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

August 7, 2026

Last Modified

September 9, 2026

Advisory Details (2)

Auto-updated Aug 7, 2026
Patch available. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

XHTML narrative parser unbounded recursion causes StackOverflow denial of service · Advisory · hapifhir/org.hl7.fhir.core · GitHub

https://github.com/hapifhir/org.hl7.fhir.core/security/advisories/GHSA-5v24-q6x8-hc38
GitHub commit Patch Available

commit 396f44750040 (hapifhir/org.hl7.fhir.core)

Patch available: hapifhir/org.hl7.fhir.core 6.9.11 (contains commit 396f44750040)

https://github.com/hapifhir/org.hl7.fhir.core/commit/396f447500407693d6ae1e64db59782862ca7506

Vendor Advisories for CVE-2026-62296(1)

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

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhathapi-fhir-base2026-08-13redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 34× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 154 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 54 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:53 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  2. 2026-11-12 17:24 UTCEchelonGraph re-scored
  3. 2026-11-12 17:24 UTCVendor advisory
  4. 2026-11-12 16:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  5. 2026-11-11 16:40 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  6. 2026-11-10 16:45 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  7. 2026-11-09 16:35 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  8. 2026-11-08 16:40 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  9. 2026-11-07 16:39 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  10. 2026-11-06 16:39 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  11. 2026-11-05 16:38 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  12. 2026-11-05 06:31 UTCEchelonGraph re-scored
  13. 2026-11-05 06:31 UTCVendor advisory
  14. 2026-11-04 16:36 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  15. 2026-11-03 16:48 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  16. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  17. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  18. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  19. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  20. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  21. 2026-10-28 19:38 UTCEchelonGraph re-scored
  22. 2026-10-28 19:38 UTCVendor advisory
  23. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  24. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  25. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
Show 75 more
  1. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  2. 2026-10-25 14:14 UTCEchelonGraph re-scored
  3. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  4. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  5. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 41st percentile
  6. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  7. 2026-10-21 00:01 UTCEchelonGraph re-scored
  8. 2026-10-21 00:01 UTCVendor advisory
  9. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  10. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  12. 2026-10-18 03:24 UTCEchelonGraph re-scored
  13. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  14. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  15. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  16. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  17. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  18. 2026-10-13 12:56 UTCEchelonGraph re-scored
  19. 2026-10-13 12:56 UTCVendor advisory
  20. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  21. 2026-10-12 15:49 UTCEchelonGraph re-scored
  22. 2026-10-11 19:34 UTCEchelonGraph re-scored
  23. 2026-10-11 16:49 UTCEchelonGraph re-scored
  24. 2026-10-11 14:11 UTCEchelonGraph re-scored
  25. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  26. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  27. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  28. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  29. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  30. 2026-10-06 23:16 UTCEchelonGraph re-scored
  31. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  32. 2026-10-05 18:32 UTCEchelonGraph re-scored
  33. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  34. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  35. 2026-10-04 05:42 UTCEchelonGraph re-scored
  36. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  37. 2026-10-03 00:59 UTCEchelonGraph re-scored
  38. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  39. 2026-10-02 09:31 UTCEchelonGraph re-scored
  40. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  41. 2026-09-30 22:54 UTCEchelonGraph re-scored
  42. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  43. 2026-09-29 05:43 UTCEchelonGraph re-scored
  44. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  45. 2026-09-27 17:07 UTCEchelonGraph re-scored
  46. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  47. 2026-09-25 04:13 UTCEchelonGraph re-scored
  48. 2026-09-24 01:32 UTCEchelonGraph re-scored
  49. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  50. 2026-09-23 00:33 UTCEchelonGraph re-scored
  51. 2026-09-22 00:40 UTCEchelonGraph re-scored
  52. 2026-09-20 20:32 UTCEchelonGraph re-scored
  53. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  54. 2026-09-20 03:01 UTCEchelonGraph re-scored
  55. 2026-09-19 02:52 UTCEchelonGraph re-scored
  56. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 27th percentile
  57. 2026-09-18 02:56 UTCEchelonGraph re-scored
  58. 2026-09-17 00:53 UTCEchelonGraph re-scored
  59. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  60. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  61. 2026-09-15 14:14 UTCEchelonGraph re-scored
  62. 2026-09-14 01:12 UTCEchelonGraph re-scored
  63. 2026-09-13 01:41 UTCEchelonGraph re-scored
  64. 2026-09-12 02:09 UTCEchelonGraph re-scored
  65. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  66. 2026-09-11 14:22 UTCEchelonGraph re-scored
  67. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 26th percentile
  68. 2026-09-10 10:25 UTCEchelonGraph re-scored
  69. 2026-09-09 05:59 UTCEchelonGraph re-scored
  70. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  71. 2026-09-07 17:42 UTCEchelonGraph re-scored
  72. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  73. 2026-09-06 15:39 UTCEchelonGraph re-scored
  74. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  75. 2026-09-05 16:08 UTCEchelonGraph re-scored

Frequently asked(5)

What is CVE-2026-62296?
CVE-2026-62296 is a high-severity vulnerability; its CVE record was published on August 7, 2026. 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(),…
When was the CVE record for CVE-2026-62296 published?
The CVE record for CVE-2026-62296 was published on August 7, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 9, 2026; the record at its source may have been updated since.
Is CVE-2026-62296 actively exploited?
CVE-2026-62296 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (42nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-62296?
CVE-2026-62296 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-62296?
A fix for CVE-2026-62296 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-62296 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-62296

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