CVE-2026-86144

HIGHNVD 7.87.8
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.8 under NVD CVSS v3. EPSS exploit probability: 0.2% (8th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 5.6 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-09-05) is not newer than that change (2026-09-15), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this week

Also known asEUVD-2026-71823 (ENISA EUVD) · GHSA-h6w8-m27h-f268 (GitHub Security Advisories)Source: ENISA EUVD

7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF, or a denial of service (e.g., for an attacker-controlled internet resource that is intentionally slow).

CVSS v3
7.8
EG Score
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

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)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (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.
EPSS PROB
0.2%
EPSS %ILE
8th
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 (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). 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 every mission impact level.CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade 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 every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (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

September 5, 2026

Last Modified

September 15, 2026

Advisory Details (2)

Auto-updated Sep 5, 2026
Patch available. Sources: github_commit.
GitHub commit

commit b63cd517afec (GNOME/libxml2)

Fix landed in GNOME/libxml2 commit b63cd517afec — awaiting tagged release

https://github.com/GNOME/libxml2/commit/b63cd517afecb76582dd9488c55e54ceaf50de61
Web page

Comparing v2.15.3...v2.15.4 · GNOME/libxml2 · GitHub

https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4

Patch Availability(13)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntupython3-libxml2 (2.9.13+dfsg-1ubuntu0.14) @ jammy2026-10-28ubuntu
redhatlibxml2-0:2.9.13-13.el9_62026-10-26redhat
redhatlibxml2-0:2.9.13-13.el9_4.102026-10-26redhat
redhatlibxml2-0:2.12.5-9.el10_0.92026-10-26redhat
redhatrhui5/rhua-rhel9:17919786932026-10-14redhat
redhatcostmanagement/costmanagement-ui-rhel10:17914608512026-10-08redhat
redhatcert-manager/cert-manager-operator-rhel9:17905898552026-09-28redhat
redhatcert-manager/jetstack-cert-manager-rhel9:17905899122026-09-28redhat
redhatcert-manager/cert-manager-istio-csr-rhel9:17905899142026-09-28redhat
redhatlibxml2-0:2.9.7-21.el8_10.92026-09-24redhat
redhatlibxml2-0:2.12.5-10.el10_2.42026-09-24redhat
redhatlibxml2-0:2.9.13-14.el9_8.52026-09-24redhat
redhatlibxml2-main-2.15.4-0.1.hum12026-09-06redhat

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.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
libxml22.12.3+dfsg-0exp1 ... 2.9.14+dfsg-1.3~deb12u6 (49 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
libxml22.12.7+dfsg+really2.9.14-2.1 ... 2.15.4+dfsg-1 (31 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
libxml22.12.7+dfsg+really2.9.14-2.1 ... 2.15.3+dfsg-1 (27 versions)
  • every version up to 2.15.4+dfsg-1: fixed in 2.15.4+dfsg-1
—

Weakness Classification(1)

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

All Vendor Advisories

(14)

Data Freshness Timeline

(refreshed 10× in last 7d / 74× 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 98 of 222 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. 2 repeat rows among the latest 100 are merged into the row they repeat. The 124 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  3. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  4. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  5. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  6. 2026-10-28 12:17 UTCEG score recompute
  7. 2026-10-28 12:17 UTCVendor advisory
  8. 2026-10-28 12:17 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  9. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  10. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  11. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  12. 2026-10-25 13:55 UTCEG score recompute
  13. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  14. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  15. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  16. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  17. 2026-10-20 17:56 UTCEG score recompute
  18. 2026-10-20 17:56 UTCVendor advisory
  19. 2026-10-20 17:56 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  20. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  21. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  22. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  23. 2026-10-18 03:05 UTCEG score recompute
  24. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  25. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.2% · 7th percentile
Show 73 more
  1. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  2. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  3. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  4. 2026-10-13 05:22 UTCEG score recompute
  5. 2026-10-13 05:22 UTCVendor advisory
  6. 2026-10-13 05:22 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  7. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  8. 2026-10-12 14:51 UTCEG score recompute
  9. 2026-10-11 19:17 UTCEG score recompute
  10. 2026-10-11 16:34 UTCEG score recompute
  11. 2026-10-11 13:51 UTCEG score recompute
  12. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  13. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  14. 2026-10-10 11:16 UTCVendor advisory
  15. 2026-10-10 11:16 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  16. 2026-10-09 23:04 UTCEG score recompute
  17. 2026-10-09 23:04 UTCVendor advisory
  18. 2026-10-09 23:04 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  19. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  20. 2026-10-09 01:06 UTCEG score recompute
  21. 2026-10-09 01:06 UTCVendor advisory
  22. 2026-10-09 01:06 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  23. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  24. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  25. 2026-10-07 22:58 UTCVendor advisory
  26. 2026-10-07 22:58 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  27. 2026-10-07 08:39 UTCVendor advisory
  28. 2026-10-07 08:39 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  29. 2026-10-06 20:23 UTCEG score recompute
  30. 2026-10-06 20:23 UTCVendor advisory
  31. 2026-10-06 20:23 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  32. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  33. 2026-10-06 08:12 UTCVendor advisory
  34. 2026-10-06 08:12 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  35. 2026-10-05 20:00 UTCEG score recompute
  36. 2026-10-05 20:00 UTCVendor advisory
  37. 2026-10-05 20:00 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  38. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  39. 2026-10-05 07:49 UTCEG score recompute
  40. 2026-10-05 07:49 UTCVendor advisory
  41. 2026-10-05 07:49 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  42. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  43. 2026-10-04 19:37 UTCVendor advisory
  44. 2026-10-04 19:37 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  45. 2026-10-04 07:25 UTCVendor advisory
  46. 2026-10-04 07:25 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  47. 2026-10-03 19:14 UTCEG score recompute
  48. 2026-10-03 19:14 UTCVendor advisory
  49. 2026-10-03 19:14 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  50. 2026-10-03 06:31 UTCVendor advisory
  51. 2026-10-03 06:31 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  52. 2026-10-02 18:19 UTCEG score recompute
  53. 2026-10-02 18:19 UTCVendor advisory
  54. 2026-10-02 18:19 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  55. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  56. 2026-10-02 05:59 UTCEG score recompute
  57. 2026-10-02 05:59 UTCVendor advisory
  58. 2026-10-02 05:59 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  59. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  60. 2026-10-01 15:47 UTCVendor advisory
  61. 2026-10-01 15:47 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  62. 2026-10-01 03:36 UTCVendor advisory
  63. 2026-10-01 03:36 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  64. 2026-09-30 15:25 UTCEG score recompute
  65. 2026-09-30 15:25 UTCVendor advisory
  66. 2026-09-30 15:25 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  67. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  68. 2026-09-30 02:38 UTCEG score recompute
  69. 2026-09-30 02:38 UTCVendor advisory
  70. 2026-09-30 02:38 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6
  71. 2026-09-29 05:02 UTCEG score recompute
  72. 2026-09-29 05:02 UTCVendor advisory
  73. 2026-09-29 05:02 UTCGHSA enrichmentGHSA-h6w8-m27h-f268 · GitHub CVSS 5.6

Frequently asked(5)

What is CVE-2026-86144?
CVE-2026-86144 is a high-severity vulnerability; its CVE record was published on September 5, 2026. In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF,…
When was the CVE record for CVE-2026-86144 published?
The CVE record for CVE-2026-86144 was published on September 5, 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 15, 2026; the record at its source may have been updated since.
Is CVE-2026-86144 actively exploited?
CVE-2026-86144 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (8th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-86144?
CVE-2026-86144 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-86144?
A fix for CVE-2026-86144 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-86144 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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