CVE-2026-77066

MEDIUMPre-NVD 5.05.0—
EchelonGraph scoreMEDIUM confidence

Score 5.0 from GitHub Security Advisory published 2026-08-20. a secondary CVSS source baseline 5.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.0EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.0Exploit: Elevated riskExposed: 0

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

The scanFeedsResolver in packages/api/src/resolvers/subscriptions/index.ts passes the caller-supplied url straight to axios.get(url, rssParserConfig()) with no address validation. The same file guards the subscribe path with validateUrl(), which rejects private and reserved ranges through the private-ip library, and createPageSaveRequest applies the same check, so the omission is specific to this resolver. An authenticated user can direct the server to request arbitrary internal endpoints. The response is parsed as a feed or as HTML and the resolver returns the resulting url, title, description and type fields, so disclosure is limited to feed-shaped metadata and to link elements advertising RSS or Atom feeds; requests that do not parse still distinguish reachable ports from unreachable ones through the resulting error.

CVSS v3
5.0
EG Score
5.0(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity50% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
10%
KEV
Not listed

Published

August 20, 2026

Last Modified

August 21, 2026

Advisory Details (5)

Auto-updated Aug 20, 2026
🔬 Proof of concept available. Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

Omnivore Server-Side Request Forgery via the scanFeeds GraphQL Query | Advisories | VulnCheck

https://www.vulncheck.com/advisories/omnivore-server-side-request-forgery-via-the-scanfeeds-graphql-query
generic

GitHub - omnivore-app/omnivore: Omnivore is a complete, open source read-it-later solution for people who like reading. · GitHub

https://github.com/omnivore-app/omnivore
generic

omnivore/packages/api/src/resolvers/subscriptions/index.ts at 0d66408746788e07cec43928581b2567308ab575 · omnivore-app/omnivore · GitHub

https://github.com/omnivore-app/omnivore/blob/0d66408746788e07cec43928581b2567308ab575/packages/api/src/resolvers/subscriptions/index.ts#L445
github_commit

commit c4d7d8562e6b (omnivore-app/omnivore)

Fix landed in omnivore-app/omnivore commit c4d7d8562e6b — awaiting tagged release

https://github.com/omnivore-app/omnivore/commit/c4d7d8562e6b9aabb1d8e4dabca268e314baa43a
generic🟡 PoC Available

SSRF via scanFeeds GraphQL query · Issue #4647 · omnivore-app/omnivore · GitHub

https://github.com/omnivore-app/omnivore/issues/4647

Vendor Advisories for CVE-2026-77066(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 18× in last 7d / 80× 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. 2026-09-20 23:32 UTCEG score recompute
  2. 2026-09-20 23:32 UTCGHSA enrichment
  3. 2026-09-20 20:16 UTCEPSS rescore
  4. 2026-09-19 23:28 UTCEG score recompute
  5. 2026-09-19 23:28 UTCGHSA enrichment
  6. 2026-09-18 23:48 UTCEG score recompute
  7. 2026-09-18 23:48 UTCGHSA enrichment
  8. 2026-09-18 19:28 UTCEPSS rescore
  9. 2026-09-18 00:08 UTCEG score recompute
  10. 2026-09-18 00:08 UTCGHSA enrichment
  11. 2026-09-16 23:21 UTCEG score recompute
  12. 2026-09-16 23:21 UTCGHSA enrichment
  13. 2026-09-16 14:08 UTCEPSS rescore
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 23:41 UTCEG score recompute
  16. 2026-09-15 23:41 UTCGHSA enrichment
  17. 2026-09-15 03:12 UTCEPSS rescore
  18. 2026-09-15 00:01 UTCGHSA enrichment
  19. 2026-09-14 00:22 UTCEG score recompute
  20. 2026-09-14 00:22 UTCGHSA enrichment
  21. 2026-09-13 00:43 UTCEG score recompute
  22. 2026-09-13 00:43 UTCGHSA enrichment
  23. 2026-09-12 15:02 UTCEPSS rescore
  24. 2026-09-12 01:04 UTCEG score recompute
  25. 2026-09-12 01:04 UTCGHSA enrichment
Show 65 more
  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-11 01:24 UTCEG score recompute
  3. 2026-09-11 01:24 UTCGHSA enrichment
  4. 2026-09-10 09:35 UTCEPSS rescore
  5. 2026-09-10 01:45 UTCGHSA enrichment
  6. 2026-09-09 02:06 UTCEG score recompute
  7. 2026-09-09 02:06 UTCGHSA enrichment
  8. 2026-09-08 22:01 UTCEPSS rescore
  9. 2026-09-07 20:11 UTCEG score recompute
  10. 2026-09-07 20:11 UTCGHSA enrichment
  11. 2026-09-06 20:31 UTCEG score recompute
  12. 2026-09-06 20:31 UTCGHSA enrichment
  13. 2026-09-06 13:48 UTCEPSS rescore
  14. 2026-09-05 20:51 UTCEG score recompute
  15. 2026-09-05 20:51 UTCGHSA enrichment
  16. 2026-09-04 21:12 UTCEG score recompute
  17. 2026-09-04 21:12 UTCGHSA enrichment
  18. 2026-09-04 05:07 UTCEPSS rescore
  19. 2026-09-03 20:52 UTCGHSA enrichment
  20. 2026-09-02 21:12 UTCEG score recompute
  21. 2026-09-02 21:12 UTCGHSA enrichment
  22. 2026-09-02 14:12 UTCEPSS rescore
  23. 2026-09-01 19:55 UTCEG score recompute
  24. 2026-09-01 19:55 UTCGHSA enrichment
  25. 2026-09-01 13:54 UTCEPSS rescore
  26. 2026-09-01 04:40 UTCEPSS rescore
  27. 2026-09-01 04:40 UTCEPSS rescore
  28. 2026-08-31 19:39 UTCEG score recompute
  29. 2026-08-31 19:38 UTCGHSA enrichment
  30. 2026-08-30 19:18 UTCEPSS rescore
  31. 2026-08-30 19:17 UTCEPSS rescore
  32. 2026-08-30 17:31 UTCEG score recompute
  33. 2026-08-30 17:31 UTCGHSA enrichment
  34. 2026-08-30 01:22 UTCEPSS rescore
  35. 2026-08-29 17:51 UTCEG score recompute
  36. 2026-08-29 17:51 UTCGHSA enrichment
  37. 2026-08-28 21:42 UTCEPSS rescore
  38. 2026-08-28 18:09 UTCGHSA enrichment
  39. 2026-08-27 15:56 UTCEG score recompute
  40. 2026-08-27 15:56 UTCGHSA enrichment
  41. 2026-08-27 14:25 UTCEPSS rescore
  42. 2026-08-26 16:16 UTCEG score recompute
  43. 2026-08-26 16:16 UTCGHSA enrichment
  44. 2026-08-26 14:47 UTCEPSS rescore
  45. 2026-08-25 16:36 UTCEG score recompute
  46. 2026-08-25 16:36 UTCGHSA enrichment
  47. 2026-08-25 13:49 UTCEPSS rescore
  48. 2026-08-24 16:57 UTCEG score recompute
  49. 2026-08-24 16:57 UTCGHSA enrichment
  50. 2026-08-24 14:18 UTCEPSS rescore
  51. 2026-08-23 16:40 UTCEG score recompute
  52. 2026-08-23 16:40 UTCGHSA enrichment
  53. 2026-08-23 00:19 UTCEPSS rescore
  54. 2026-08-22 17:01 UTCEG score recompute
  55. 2026-08-22 17:01 UTCGHSA enrichment
  56. 2026-08-21 23:49 UTCEPSS rescore
  57. 2026-08-21 17:21 UTCEG score recompute
  58. 2026-08-21 17:21 UTCGHSA enrichment
  59. 2026-08-21 17:05 UTCEG score recompute
  60. 2026-08-21 17:05 UTCGHSA enrichment
  61. 2026-08-21 11:12 UTCEG score recompute
  62. 2026-08-21 11:11 UTCGHSA enrichment
  63. 2026-08-20 11:27 UTCEG score recompute
  64. 2026-08-20 11:12 UTCEG score recompute
  65. 2026-08-20 11:11 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-77066?
CVE-2026-77066 is a medium vulnerability published on August 20, 2026. The scanFeedsResolver in packages/api/src/resolvers/subscriptions/index.ts passes the caller-supplied url straight to axios.get(url, rssParserConfig()) with no address validation. The same file guards the subscribe path with validateUrl(), which rejects private and reserved ranges through the…
When was CVE-2026-77066 disclosed?
CVE-2026-77066 was first published in the National Vulnerability Database on August 20, 2026, with the most recent update on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-77066 actively exploited?
CVE-2026-77066 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 89.9% of all scored CVEs.
What is the CVSS score of CVE-2026-77066?
CVE-2026-77066 has a CVSS v3 base score of 5.0 (NVD).
How do I remediate CVE-2026-77066?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-77066, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-77066

Explore →

Is Your Infrastructure Affected by CVE-2026-77066?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs