CVE-2026-6653

HIGHPre-NVD 7.07.0—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.0 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 79% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.0
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.0Exploit: NoneExposed: 0

A fix is available — apply it.

Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.

CVSS v3
7.0
EG Score
7.0(medium)
EPSS
20.8%
KEV
Not listed

Published

June 22, 2026

Last Modified

June 22, 2026

Advisory Details (2)

Auto-updated Jun 22, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

GNOME / libxml2 · GitLab

https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1058
generic🟡 PoC Available

Bug #2141260 “libxml2 2.9.14+dfsg-1.3ubuntu3.7 on Ubuntu Ubuntu ...” : Bugs : libxml2 package : Ubuntu

https://bugs.launchpad.net/ubuntu/+source/libxml2/+bug/2141260

Vendor Advisories for CVE-2026-6653(1)

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

Weakness Classification(2)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 52× in last 7d / 102× 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.

Showing the most recent 100 of 102 total refreshes for this CVE.

  1. 2026-07-07 07:58 UTCEG score recompute
  2. 2026-07-07 07:58 UTCVendor advisory
  3. 2026-07-07 07:58 UTCGHSA enrichment
  4. 2026-07-06 18:56 UTCEG score recompute
  5. 2026-07-06 18:56 UTCVendor advisory
  6. 2026-07-06 18:56 UTCGHSA enrichment
  7. 2026-07-06 16:27 UTCEPSS rescore
  8. 2026-07-06 16:27 UTCEPSS rescore
  9. 2026-07-06 06:19 UTCEG score recompute
  10. 2026-07-06 06:19 UTCVendor advisory
  11. 2026-07-06 06:19 UTCGHSA enrichment
  12. 2026-07-06 02:23 UTCEPSS rescore
  13. 2026-07-06 02:23 UTCEPSS rescore
  14. 2026-07-05 17:37 UTCEG score recompute
  15. 2026-07-05 17:37 UTCVendor advisory
  16. 2026-07-05 17:37 UTCGHSA enrichment
  17. 2026-07-05 05:20 UTCEG score recompute
  18. 2026-07-05 05:20 UTCVendor advisory
  19. 2026-07-05 05:20 UTCGHSA enrichment
  20. 2026-07-05 02:31 UTCEPSS rescore
  21. 2026-07-05 02:30 UTCEPSS rescore
  22. 2026-07-04 16:51 UTCEG score recompute
  23. 2026-07-04 16:51 UTCVendor advisory
  24. 2026-07-04 16:51 UTCGHSA enrichment
  25. 2026-07-04 06:31 UTCEPSS rescore
Show 75 more
  1. 2026-07-04 06:31 UTCEPSS rescore
  2. 2026-07-04 04:17 UTCEG score recompute
  3. 2026-07-04 04:17 UTCVendor advisory
  4. 2026-07-04 04:17 UTCGHSA enrichment
  5. 2026-07-03 15:16 UTCEG score recompute
  6. 2026-07-03 15:16 UTCVendor advisory
  7. 2026-07-03 15:16 UTCGHSA enrichment
  8. 2026-07-03 02:58 UTCEG score recompute
  9. 2026-07-03 02:58 UTCVendor advisory
  10. 2026-07-03 02:58 UTCGHSA enrichment
  11. 2026-07-02 14:41 UTCEG score recompute
  12. 2026-07-02 14:41 UTCVendor advisory
  13. 2026-07-02 14:40 UTCGHSA enrichment
  14. 2026-07-02 02:23 UTCEG score recompute
  15. 2026-07-02 02:23 UTCVendor advisory
  16. 2026-07-02 02:23 UTCGHSA enrichment
  17. 2026-07-01 15:07 UTCEPSS rescore
  18. 2026-07-01 14:05 UTCEG score recompute
  19. 2026-07-01 14:05 UTCVendor advisory
  20. 2026-07-01 14:04 UTCGHSA enrichment
  21. 2026-07-01 01:47 UTCEG score recompute
  22. 2026-07-01 01:47 UTCVendor advisory
  23. 2026-07-01 01:47 UTCGHSA enrichment
  24. 2026-06-30 23:22 UTCEPSS rescore
  25. 2026-06-30 13:29 UTCEG score recompute
  26. 2026-06-30 13:29 UTCVendor advisory
  27. 2026-06-30 13:29 UTCGHSA enrichment
  28. 2026-06-30 01:11 UTCEG score recompute
  29. 2026-06-30 01:11 UTCVendor advisory
  30. 2026-06-30 01:11 UTCGHSA enrichment
  31. 2026-06-29 14:06 UTCEPSS rescore
  32. 2026-06-29 12:54 UTCEG score recompute
  33. 2026-06-29 12:54 UTCVendor advisory
  34. 2026-06-29 12:54 UTCGHSA enrichment
  35. 2026-06-29 00:36 UTCEG score recompute
  36. 2026-06-29 00:36 UTCVendor advisory
  37. 2026-06-29 00:36 UTCGHSA enrichment
  38. 2026-06-28 14:07 UTCEPSS rescore
  39. 2026-06-28 12:18 UTCEG score recompute
  40. 2026-06-28 12:18 UTCVendor advisory
  41. 2026-06-28 12:18 UTCGHSA enrichment
  42. 2026-06-28 04:56 UTCEPSS rescore
  43. 2026-06-28 00:01 UTCEG score recompute
  44. 2026-06-28 00:01 UTCVendor advisory
  45. 2026-06-28 00:01 UTCGHSA enrichment
  46. 2026-06-27 11:43 UTCEG score recompute
  47. 2026-06-27 11:43 UTCVendor advisory
  48. 2026-06-27 11:43 UTCGHSA enrichment
  49. 2026-06-27 03:08 UTCEPSS rescore
  50. 2026-06-26 23:26 UTCEG score recompute
  51. 2026-06-26 23:26 UTCVendor advisory
  52. 2026-06-26 23:26 UTCGHSA enrichment
  53. 2026-06-26 11:08 UTCEG score recompute
  54. 2026-06-26 11:08 UTCVendor advisory
  55. 2026-06-26 11:08 UTCGHSA enrichment
  56. 2026-06-25 21:27 UTCEG score recompute
  57. 2026-06-25 21:27 UTCVendor advisory
  58. 2026-06-25 21:27 UTCGHSA enrichment
  59. 2026-06-25 13:50 UTCEPSS rescore
  60. 2026-06-25 09:09 UTCEG score recompute
  61. 2026-06-25 09:09 UTCGHSA enrichment
  62. 2026-06-24 20:52 UTCEG score recompute
  63. 2026-06-24 20:52 UTCGHSA enrichment
  64. 2026-06-24 14:05 UTCEPSS rescore
  65. 2026-06-24 08:35 UTCEG score recompute
  66. 2026-06-24 08:35 UTCGHSA enrichment
  67. 2026-06-23 21:33 UTCEPSS rescore
  68. 2026-06-23 21:33 UTCEPSS rescore
  69. 2026-06-23 20:18 UTCEG score recompute
  70. 2026-06-23 20:18 UTCGHSA enrichment
  71. 2026-06-23 08:00 UTCEG score recompute
  72. 2026-06-23 08:00 UTCGHSA enrichment
  73. 2026-06-22 19:40 UTCEG score recompute▲ 7.00
  74. 2026-06-22 19:40 UTCGHSA enrichment
  75. 2026-06-22 19:39 UTCNVD updateCVSS v3 → 7 · CVSS v4 → 7

Frequently asked(5)

What is CVE-2026-6653?
CVE-2026-6653 is a high vulnerability published on June 22, 2026. Use After Free in libxml2's xmlParseInternalSubset from GNOME libxml2 version 2.9.11 to 2.11.0 allows a remote attacker to cause a denial-of-service via maliciously crafted XML input with improper entity resolution handling.
When was CVE-2026-6653 disclosed?
CVE-2026-6653 was first published in the National Vulnerability Database on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6653 actively exploited?
CVE-2026-6653 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 20.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-6653?
CVE-2026-6653 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2026-6653?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6653, 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

Explore the affected products and dependency analysis for CVE-2026-6653

Explore →

Is Your Infrastructure Affected by CVE-2026-6653?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs