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% (40th 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
Trending — 3 sources updated this weekElevated
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
40th
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 2026-10-17). 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: 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.

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 10× in last 7d / 44× 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 it from the CNA feed. 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). Most recent first.

Showing the most recent 100 of 120 refreshes 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 20 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

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

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 (40th 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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