CVE-2026-53878

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

Score 6.1 from GitHub Security Advisory published 2026-07-07. a secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: None knownExposed: 0

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

An issue was discovered in Django 6.0 before 6.0.7 and 5.2 before 5.2.16. DomainNameValidator does not prohibit newlines in domain names (unless used via a form field, since CharField strips newlines). If an application uses values with newlines in an HTTP response, header injection can occur. Django itself is unaffected because HttpResponse prohibits newlines in HTTP headers. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Bence Nagy for reporting this issue.

CVSS v3
6.1
EG Score
6.1(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: 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
Severity61% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
25%
KEV
Not listed

Published

July 7, 2026

Last Modified

July 9, 2026

Advisory Details (3)

Auto-updated Jul 7, 2026
No patch confirmed yet.
generic

Django security releases issued: 6.0.7 and 5.2.16 | Weblog | Django

https://www.djangoproject.com/weblog/2026/jul/07/security-releases/
generic
https://groups.google.com/g/django-announce
generic

Archive of security issues | Django documentation | Django

https://docs.djangoproject.com/en/dev/releases/security/

Vendor Advisories for CVE-2026-53878(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
python-django3:4.2.23-1 ... 3:6.1~rc1-1 (60 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
python-django3:4.2.23-1 ... 3:5.2~rc1-1 (44 versions)3:5.2.16-1—
PyPI(1)
PackageVulnerable rangeFixed inDependents
django5.2 ... 6.0.6 (23 versions)6.0.7—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 62× 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 103 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-53878?
CVE-2026-53878 is a medium vulnerability published on July 7, 2026. An issue was discovered in Django 6.0 before 6.0.7 and 5.2 before 5.2.16. DomainNameValidator does not prohibit newlines in domain names (unless used via a form field, since CharField strips newlines). If an application uses values with newlines in an HTTP response, header injection can occur.…
When was CVE-2026-53878 disclosed?
CVE-2026-53878 was first published in the National Vulnerability Database on July 7, 2026, with the most recent update on July 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53878 actively exploited?
CVE-2026-53878 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 75.0% of all scored CVEs.
What is the CVSS score of CVE-2026-53878?
CVE-2026-53878 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-53878?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53878, 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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