CVE-2026-54199

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (36th 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
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.3Exploit: None knownExposed services: Not assessed

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

Tobit Laboratories AG TeamDavid's Webbox is vulnerable to HTTP header injection through the request body in the application's link storing functionality (//ServerClient_celink.htm), which is appended to the redirect target in the 302 HTTP response. If a line feed is added, this will also be added to the redirect link, resulting in the ability to control the response headers. This issue affects TeamDavid before Rollout 528.

Starting with Rollout 528 (June 30, 2026), the affected functionality is disabled by default and the vulnerabilities are therefore no longer exposed through this functionality.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
39
EG Risk 39/100CISA 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
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.4%
EPSS %ILE
36th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (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

August 7, 2026

Last Modified

September 7, 2026

Advisory Details (2)

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

22 CVEs in TeamDavid® a "secure" M365 alternative - InfoGuard Labs

https://labs.infoguard.ch/posts/22-cves-in-david-a-secure-m365-alternative/
generic

Release Notes | TeamDavid

https://david.tobit.software/releasenotes

Vendor Advisories for CVE-2026-54199(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 72× 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 158 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-54199?
CVE-2026-54199 is a medium vulnerability published on August 7, 2026. Tobit Laboratories AG TeamDavid's Webbox is vulnerable to HTTP header injection through the request body in the application's link storing functionality (//ServerClient_celink.htm), which is appended to the redirect target in the 302 HTTP response. If a line feed is added, this will also be added…
When was CVE-2026-54199 disclosed?
CVE-2026-54199 was first published on August 7, 2026, with the most recent update on September 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54199 actively exploited?
CVE-2026-54199 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (36th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-54199?
CVE-2026-54199 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-54199?
No fix for CVE-2026-54199 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-54199 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-54199

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