CVE-2026-6210

HIGHNVD 8.78.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.7 under NVD CVSS v3. 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, nvd
8.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.7Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

A type confusion vulnerability in Qt SVG allows an attacker to cause an application crash via a crafted SVG image.

When processing SVG marker references, the renderer retrieves a node by its id attribute and casts it to QSvgMarker* without verifying the node type. A non-marker element (such as a element) that references itself as a marker triggers an out-of-bounds heap read due to the object size difference between QSvgLine and QSvgMarker, followed by an endless recursion that bypasses the marker recursion guard through incorrect virtual dispatch. The result is an application crash (denial of service).

This issue affects Qt SVG:  from 6.7.0 before 6.8.8, from 6.9.0 before 6.11.1.

CVSS v3
8.7
EG Score
8.7(medium)
EG Risk
54(Track)
EG Risk 54/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity87% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

May 6, 2026

Last Modified

July 29, 2026

Advisory Details (2)

Auto-updated May 6, 2026
No patch confirmed yet.
generic

OSS Fuzz

https://issues.oss-fuzz.com/issues/496327371
generic
https://codereview.qt-project.org/c/qt/qtsvg/+/724887

Vendor Advisories for CVE-2026-6210(1)

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

Affected Packages

(7 across 4 ecosystems)
Debian:12(2)
PackageVulnerable rangeFixed inDependents
qt6-svg6.10.2-1 ... 6.9.2-5 (34 versions)——
qtsvg-opensource-src5.15.10-1 ... 5.15.9-1 (15 versions)——
Debian:13(2)
PackageVulnerable rangeFixed inDependents
qt6-svg6.10.2-1 ... 6.9.2-5 (18 versions)——
qtsvg-opensource-src5.15.15-2 ... 5.15.19-2 (7 versions)——
Debian:14(2)
PackageVulnerable rangeFixed inDependents
qt6-svg6.10.2-1 ... 6.9.2-5 (13 versions)6.10.2-6—
qtsvg-opensource-src5.15.15-2 ... 5.15.19-2 (7 versions)——
Debian:11(1)
PackageVulnerable rangeFixed inDependents
qtsvg-opensource-src5.15.10-1 ... 5.15.9-1 (27 versions)——

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 3× in last 7d / 21× 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 201 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-6210?
CVE-2026-6210 is a high vulnerability published on May 6, 2026. A type confusion vulnerability in Qt SVG allows an attacker to cause an application crash via a crafted SVG image. When processing SVG marker references, the renderer retrieves a node by its id attribute and casts it to QSvgMarker* without verifying the node type. A non-marker element (such as a…
When was CVE-2026-6210 disclosed?
CVE-2026-6210 was first published in the National Vulnerability Database on May 6, 2026, with the most recent update on July 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-6210 actively exploited?
CVE-2026-6210 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 79.4% of all scored CVEs.
What is the CVSS score of CVE-2026-6210?
CVE-2026-6210 has a CVSS v3 base score of 8.7 (NVD).
How do I remediate CVE-2026-6210?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-6210, 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.

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