CVE-2026-5808

MEDIUMNVD 4.34.3
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 4.3 from GitHub Security Advisory published 2026-04-09. NVD baseline CVSS 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week
4.3EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 4.3Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

A vulnerability was detected in openstatusHQ openstatus up to 1b678e71a85961ae319cbb214a8eae634059330c. This impacts an unknown function of the file apps/dashboard/src/app/(dashboard)/onboarding/client.tsx of the component Onboarding Endpoint. The manipulation of the argument callbackURL results in cross site scripting. The attack may be launched remotely. This product operates on a rolling release basis, ensuring continuous delivery. Consequently, there are no version details for either affected or updated releases. The patch is identified as 43d9b2b9ef8ae1a98f9bdc8a9f86d6a3dfaa2dfb. It is advisable to implement a patch to correct this issue. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

CVSS v3
4.3
EG Score
4.3MEDIUMmedium confidence
EG Risk
20
EG Risk 20/100

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 (value × EchelonGraph’s weight)
Severity43% × 45%
The EG Score, 4.3 of 10.
Exploitation0.5% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

April 8, 2026

Last Modified

July 24, 2026

Advisory Details (4)

Auto-updated Jul 24, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
GitHub pull request

chore: improve callback url

Fix merged in openstatusHQ/openstatus PR #1981 on 2026-03-13 — awaiting tagged release

https://github.com/openstatusHQ/openstatus/pull/1981
GitHub commit

commit 43d9b2b9ef8a (openstatusHQ/openstatus)

Fix landed in openstatusHQ/openstatus commit 43d9b2b9ef8a — awaiting tagged release

https://github.com/openstatusHQ/openstatus/commit/43d9b2b9ef8ae1a98f9bdc8a9f86d6a3dfaa2dfb
Web page

GitHub - openstatusHQ/openstatus: 🫖 Status page with uptime monitoring & API monitoring as code 🫖 · GitHub

https://github.com/openstatusHQ/openstatus/
Web page

cvd_openstatus_20260314.md · GitHub

https://gist.github.com/TrebledJ/ab83abb1ca7ff6c1f39e16a37020f323

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 29× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 97 of 197 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 3 repeat rows among the latest 100 are merged into the row they repeat. The 100 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-16 16:43 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  2. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  3. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  4. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  5. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  6. 2026-10-12 15:53 UTCEG score recompute
  7. 2026-10-11 19:37 UTCEG score recompute
  8. 2026-10-11 16:52 UTCEG score recompute
  9. 2026-10-11 14:14 UTCEG score recompute
  10. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
  11. 2026-10-10 21:23 UTCOSV refresh
  12. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  13. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  14. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  15. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  16. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  17. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  18. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  19. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  20. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  21. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  22. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  23. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  24. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 39th percentile
  25. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 39th percentile
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  1. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  2. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  3. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  4. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  5. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  6. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  7. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  8. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  9. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  10. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  11. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  12. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  13. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  14. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  15. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  16. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  17. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  18. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  19. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  20. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  21. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  22. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  23. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  24. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  25. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  26. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  27. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  28. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  29. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  30. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  31. 2026-08-16 07:17 UTCEG score recompute
  32. 2026-08-16 07:17 UTCGHSA enrichmentGHSA-952x-346h-wrvr · GitHub CVSS 4.3
  33. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  34. 2026-08-14 05:13 UTCEG score recompute
  35. 2026-08-14 05:13 UTCGHSA enrichmentGHSA-952x-346h-wrvr · GitHub CVSS 4.3
  36. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  37. 2026-08-12 19:28 UTCEG score recompute
  38. 2026-08-12 19:28 UTCGHSA enrichmentGHSA-952x-346h-wrvr · GitHub CVSS 4.3
  39. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  40. 2026-08-11 03:28 UTCEG score recompute
  41. 2026-08-11 03:28 UTCGHSA enrichmentGHSA-952x-346h-wrvr · GitHub CVSS 4.3
  42. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  43. 2026-08-10 04:06 UTCEG score recompute
  44. 2026-08-10 04:06 UTCGHSA enrichmentGHSA-952x-346h-wrvr · GitHub CVSS 4.3
  45. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  46. 2026-08-09 04:41 UTCEG score recompute
  47. 2026-08-09 04:41 UTCGHSA enrichmentGHSA-952x-346h-wrvr · GitHub CVSS 4.3
  48. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  49. 2026-08-07 14:35 UTCEG score recompute
  50. 2026-08-07 14:35 UTCGHSA enrichmentGHSA-952x-346h-wrvr · GitHub CVSS 4.3
  51. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  52. 2026-08-05 23:50 UTCEG score recompute
  53. 2026-08-05 23:50 UTCGHSA enrichmentGHSA-952x-346h-wrvr · GitHub CVSS 4.3
  54. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  55. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  56. 2026-08-04 10:39 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  57. 2026-08-03 22:04 UTCEG score recompute
  58. 2026-08-03 22:04 UTCGHSA enrichmentGHSA-952x-346h-wrvr · GitHub CVSS 4.3
  59. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  60. 2026-08-02 14:00 UTCEG score recompute
  61. 2026-08-02 14:00 UTCGHSA enrichmentGHSA-952x-346h-wrvr · GitHub CVSS 4.3
  62. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  63. 2026-08-01 04:16 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  64. 2026-07-30 16:28 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  65. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  66. 2026-07-28 15:37 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  67. 2026-07-27 14:14 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  68. 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  69. 2026-07-26 08:41 UTCEG score recompute
  70. 2026-07-26 08:40 UTCGHSA enrichmentGHSA-952x-346h-wrvr · GitHub CVSS 4.3
  71. 2026-07-25 14:18 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  72. 2026-07-24 14:18 UTCEPSS rescoreEPSS 0.3% · 20th percentile

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Frequently asked(5)

What is CVE-2026-5808?
CVE-2026-5808 is a medium-severity vulnerability; its CVE record was published on April 8, 2026. A vulnerability was detected in openstatusHQ openstatus up to 1b678e71a85961ae319cbb214a8eae634059330c. This impacts an unknown function of the file apps/dashboard/src/app/(dashboard)/onboarding/client.tsx of the component Onboarding Endpoint. The manipulation of the argument callbackURL results in…
When was the CVE record for CVE-2026-5808 published?
The CVE record for CVE-2026-5808 was published on April 8, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 24, 2026; the record at its source may have been updated since.
Is CVE-2026-5808 actively exploited?
CVE-2026-5808 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-5808?
CVE-2026-5808 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-5808?
An upstream fix for CVE-2026-5808 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix.

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