CVE-2026-53504

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (47th percentile of EPSS-scored CVEs). 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
Elevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 7.5Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, the convolution filter regular expression performs exponential backtracking on crafted repeated numeric input, allowing a URL request to exhaust processing time. This issue is fixed in 7.8.0.

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

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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
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
0.6%
EPSS %ILE
47th
KEV
Not listed

CISA SSVCTrack 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). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 31, 2026

Last Modified

September 8, 2026

Advisory Details (3)

Auto-updated Jul 31, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github.
github Patch Available🟡 PoC Available

Regex Denial of Service (ReDoS) in `convolution` filter · Advisory · thumbor/thumbor · GitHub

https://github.com/thumbor/thumbor/security/advisories/GHSA-5vjc-7cxw-4w6j
github_release Patch Available

Release 7.8.0

Patch available: thumbor/thumbor 7.8.0

https://github.com/thumbor/thumbor/releases/tag/7.8.0
github_commit Patch Available

commit 3f38fe1610d2 (thumbor/thumbor)

Patch available: thumbor/thumbor 7.8.0 (contains commit 3f38fe1610d2)

https://github.com/thumbor/thumbor/commit/3f38fe1610d20168e91f76d432212de30727eb2e

Vendor Advisories for CVE-2026-53504(1)

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

Affected Packages

(2 across 2 ecosystems)
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
thumbor6.3.2-3 ... 7.7.7-6 (16 versions)
  • every version up to 7.8.0-1: fixed in 7.8.0-1
—
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
thumbor4.1.3 ... 7.7.7 (118 versions)
  • every version up to 7.8.0: fixed in 7.8.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 44× 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 110 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-53504?
CVE-2026-53504 is a high vulnerability published on July 31, 2026. Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, the convolution filter regular expression performs exponential backtracking on crafted repeated numeric input, allowing a URL request to exhaust processing time. This issue is fixed in 7.8.0.
When was CVE-2026-53504 disclosed?
CVE-2026-53504 was first published on July 31, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53504 actively exploited?
CVE-2026-53504 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53504?
CVE-2026-53504 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-2026-53504?
A fix for CVE-2026-53504 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-53504 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-53504

Explore →

Is Your Infrastructure Affected by CVE-2026-53504?

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

Book a Demo →Browse All CVEs