CVE-2026-5803

MEDIUMNVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

Score 6.3 from GitHub Security Advisory published 2026-04-08. NVD baseline CVSS 6.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this weekElevated
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.3Exploit: Elevated riskExposed: 0

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

A security flaw has been discovered in bigsk1 openai-realtime-ui up to 188ccde27fdf3d8fab8da81f3893468f53b2797c. The affected element is an unknown function of the file server.js of the component API Proxy Endpoint. Performing a manipulation of the argument Query results in server-side request forgery. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The patch is named 54f8f50f43af97c334a881af7b021e84b5b8310f. It is suggested to install a patch to address this issue.

CVSS v3
6.3
EG Score
6.3(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity63% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

April 8, 2026

Last Modified

July 24, 2026

Advisory Details (5)

Auto-updated Jun 15, 2026
🔬 Proof of concept available. Upstream fix merged — awaiting tagged release. Sources: github_commit, github_pr.
github_pr

Fix SSRF in /api/proxy by validating targets and redirects

Fix merged in bigsk1/openai-realtime-ui PR #2 on 2026-03-24 — awaiting tagged release

https://github.com/bigsk1/openai-realtime-ui/pull/2
generic🟡 PoC Available

Server-Side Request Forgery · Issue #1 · bigsk1/openai-realtime-ui · GitHub

https://github.com/bigsk1/openai-realtime-ui/issues/1
github_commit

commit 54f8f50f43af (bigsk1/openai-realtime-ui)

Fix landed in bigsk1/openai-realtime-ui commit 54f8f50f43af — awaiting tagged release

https://github.com/bigsk1/openai-realtime-ui/commit/54f8f50f43af97c334a881af7b021e84b5b8310f
generic

GitHub - bigsk1/openai-realtime-ui: 🎙️ OpenAI Realtime API with tools and webhook support · GitHub

https://github.com/bigsk1/openai-realtime-ui/
generic🟡 PoC Available

Server-Side Request Forgery Vulnerability in openai-realtime-ui · Issue #3 · BruceJqs/public_exp · GitHub

https://github.com/BruceJqs/public_exp/issues/3

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 17× in last 7d / 48× 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 108 total refreshes for this CVE.

  1. 2026-07-26 14:54 UTCEPSS rescore
  2. 2026-07-26 14:54 UTCEPSS rescore
  3. 2026-07-26 08:42 UTCEG score recompute
  4. 2026-07-26 08:41 UTCGHSA enrichment
  5. 2026-07-25 14:18 UTCEPSS rescore
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  7. 2026-07-24 14:18 UTCEPSS rescore
  8. 2026-07-24 14:18 UTCEPSS rescore
  9. 2026-07-24 10:11 UTCNVD updateCVSS v4 → 2.1
  10. 2026-07-23 14:18 UTCEPSS rescore
  11. 2026-07-23 14:18 UTCEPSS rescore
  12. 2026-07-23 03:20 UTCEG score recompute
  13. 2026-07-22 14:08 UTCEPSS rescore
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  1. 2026-07-13 06:13 UTCEPSS rescore
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  9. 2026-07-07 13:46 UTCEPSS rescore
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  27. 2026-06-23 21:33 UTCEPSS rescore
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  31. 2026-06-21 14:56 UTCEPSS rescore
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  35. 2026-06-19 19:26 UTCEPSS rescore
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  37. 2026-06-18 17:52 UTCEPSS rescore
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  40. 2026-06-16 17:53 UTCEPSS rescore
  41. 2026-06-15 17:49 UTCEPSS rescore
  42. 2026-06-15 17:49 UTCEPSS rescore
  43. 2026-06-15 05:32 UTCGHSA enrichment
  44. 2026-06-14 23:18 UTCEPSS rescore
  45. 2026-06-13 23:00 UTCEPSS rescore
  46. 2026-06-12 23:12 UTCEPSS rescore
  47. 2026-06-12 23:12 UTCEPSS rescore
  48. 2026-06-11 20:46 UTCGHSA enrichment
  49. 2026-06-11 14:00 UTCEPSS rescore
  50. 2026-06-10 22:19 UTCEPSS rescore
  51. 2026-06-10 13:22 UTCEPSS rescore
  52. 2026-06-10 11:56 UTCGHSA enrichment
  53. 2026-06-09 13:15 UTCGHSA enrichment
  54. 2026-06-08 14:17 UTCEPSS rescore
  55. 2026-06-08 07:40 UTCGHSA enrichment
  56. 2026-06-07 15:25 UTCEPSS rescore
  57. 2026-06-07 08:59 UTCGHSA enrichment
  58. 2026-06-06 13:47 UTCEPSS rescore
  59. 2026-06-05 22:47 UTCEPSS rescore
  60. 2026-06-05 06:10 UTCEPSS rescore
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  73. 2026-05-28 13:44 UTCEPSS rescore
  74. 2026-05-28 13:44 UTCEPSS rescore
  75. 2026-05-27 13:40 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-5803?
CVE-2026-5803 is a medium vulnerability published on April 8, 2026. A security flaw has been discovered in bigsk1 openai-realtime-ui up to 188ccde27fdf3d8fab8da81f3893468f53b2797c. The affected element is an unknown function of the file server.js of the component API Proxy Endpoint. Performing a manipulation of the argument Query results in server-side request…
When was CVE-2026-5803 disclosed?
CVE-2026-5803 was first published in the National Vulnerability Database on April 8, 2026, with the most recent update on July 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-5803 actively exploited?
CVE-2026-5803 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 86.5% of all scored CVEs.
What is the CVSS score of CVE-2026-5803?
CVE-2026-5803 has a CVSS v3 base score of 6.3 (NVD).
How do I remediate CVE-2026-5803?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-5803, 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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