CVE-2026-100848

HIGHPre-NVD 7.17.1—
EchelonGraph scoreHIGH confidence

Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-27. A secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.1Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

AzuraCast (Composer package azuracast/azuracast) before 0.23.8 validates a station's "Remote Relay" URL only for URL syntax and an http/https scheme (Utilities\Urls::parseUserUrl, used by StationRemote::getUrlAsUri) and performs no host or IP address restriction. A user holding only the station-scoped RemoteRelays permission can therefore set a Remote Relay URL pointing at loopback, private-network, or cloud-metadata addresses (e.g. http://127.0.0.1:/ or http://169.254.169.254/latest/meta-data/), and AzuraCast's periodic background Now Playing sync (AbstractRemote::getNowPlayingAsync) will automatically and repeatedly issue HTTP requests to that address, resulting in server-side request forgery against internal resources. This affects the main branch as of commit bcf8754eef3a268ad82c3db4d81f7920c3c28b56 (2026-07-31); no patched version is available at the time of the advisory.

CVSS v3
7.1
EG Score
7.1HIGHhigh confidence
EG Risk
48
EG Risk 48/100CISA 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
Severity71% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
6th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (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

September 27, 2026

Last Modified

September 28, 2026

Advisory Details (2)

Auto-updated Sep 27, 2026
🔬 Proof of concept available. Patch available. Sources: github.
generic

AzuraCast before 0.23.8 Server-Side Request Forgery via Remote Relay URL | Advisories | VulnCheck

https://www.vulncheck.com/advisories/azuracast-before-0.23.8-server-side-request-forgery-via-remote-relay-url
github Patch Available🟡 PoC Available

SSRF via Station Remote Relay URL — no host/IP validation at all · Advisory · AzuraCast/AzuraCast · GitHub

https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-4h6m-rrxm-7w3m

Vendor Advisories for CVE-2026-100848(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 33× in last 7d / 39× 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.

  1. 2026-10-05 03:51 UTCEG score recompute
  2. 2026-10-05 03:51 UTCGHSA enrichment
  3. 2026-10-04 23:21 UTCEPSS rescore
  4. 2026-10-04 15:25 UTCGHSA enrichment
  5. 2026-10-04 03:01 UTCGHSA enrichment
  6. 2026-10-03 14:37 UTCEG score recompute
  7. 2026-10-03 14:37 UTCGHSA enrichment
  8. 2026-10-03 14:25 UTCEPSS rescore
  9. 2026-10-03 02:10 UTCEG score recompute
  10. 2026-10-03 02:10 UTCGHSA enrichment
  11. 2026-10-02 13:46 UTCGHSA enrichment
  12. 2026-10-02 01:21 UTCEG score recompute
  13. 2026-10-02 01:21 UTCGHSA enrichment
  14. 2026-10-01 19:49 UTCEPSS rescore
  15. 2026-10-01 12:58 UTCGHSA enrichment
  16. 2026-10-01 00:34 UTCEG score recompute
  17. 2026-10-01 00:34 UTCGHSA enrichment
  18. 2026-09-30 15:02 UTCEPSS rescore
  19. 2026-09-30 12:11 UTCGHSA enrichment
  20. 2026-09-29 23:47 UTCEG score recompute
  21. 2026-09-29 23:47 UTCGHSA enrichment
  22. 2026-09-29 15:20 UTCEPSS rescore
  23. 2026-09-29 09:39 UTCEG score recompute
  24. 2026-09-29 09:38 UTCGHSA enrichment
  25. 2026-09-28 21:13 UTCEG score recompute
Show 14 more
  1. 2026-09-28 21:13 UTCGHSA enrichment
  2. 2026-09-28 17:38 UTCEG score recompute
  3. 2026-09-28 17:38 UTCGHSA enrichment
  4. 2026-09-28 16:58 UTCEG score recompute
  5. 2026-09-28 16:57 UTCGHSA enrichment
  6. 2026-09-28 15:47 UTCEG score recompute
  7. 2026-09-28 15:47 UTCGHSA enrichment
  8. 2026-09-28 13:50 UTCEPSS rescore
  9. 2026-09-28 03:24 UTCGHSA enrichment
  10. 2026-09-27 15:00 UTCEG score recompute
  11. 2026-09-27 15:00 UTCGHSA enrichment
  12. 2026-09-27 02:36 UTCEG score recompute
  13. 2026-09-27 01:53 UTCEG score recompute
  14. 2026-09-27 01:49 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-100848?
CVE-2026-100848 is a high vulnerability published on September 27, 2026. AzuraCast (Composer package azuracast/azuracast) before 0.23.8 validates a station's "Remote Relay" URL only for URL syntax and an http/https scheme (Utilities\Urls::parseUserUrl, used by StationRemote::getUrlAsUri) and performs no host or IP address restriction. A user holding only the…
When was CVE-2026-100848 disclosed?
CVE-2026-100848 was first published on September 27, 2026, with the most recent update on September 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100848 actively exploited?
CVE-2026-100848 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (6th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100848?
CVE-2026-100848 has a CVSS base score of 7.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-100848?
A fix for CVE-2026-100848 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-100848 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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