CVE-2026-56771

HIGHPre-NVD 8.58.5—
EchelonGraph scoreMEDIUM confidence

Score 8.5 from GitHub Security Advisory published 2026-06-25. a secondary CVSS source baseline 8.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.5Exploit: None knownExposed: 0

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

NewsBlur before version 14.5.0 contains a server-side request forgery vulnerability in the add_url endpoint that allows authenticated users to make arbitrary server requests to internal networks by failing to filter private IP addresses. Attackers can exploit this to access localhost services and cloud metadata endpoints, enabling internal network scanning and sensitive data exfiltration.

CVSS v3
8.5
EG Score
8.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity85% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
11%
KEV
Not listed

Published

June 25, 2026

Last Modified

July 14, 2026

Advisory Details (3)

Auto-updated Jun 25, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

NewsBlur < 14.5.0 - Server-Side Request Forgery via add_url Endpoint | Advisories | VulnCheck

https://www.vulncheck.com/advisories/newsblur-server-side-request-forgery-via-add-url-endpoint
github_commit

commit af742daeca7c (samuelclay/NewsBlur)

Fix landed in samuelclay/NewsBlur commit af742daeca7c — awaiting tagged release

https://github.com/samuelclay/NewsBlur/commit/af742daeca7cc6c8b0d58cbea381e7bc44daa520
github_commit

commit 2e6c6812c94f (samuelclay/NewsBlur)

Fix landed in samuelclay/NewsBlur commit 2e6c6812c94f — awaiting tagged release

https://github.com/samuelclay/NewsBlur/commit/2e6c6812c94f35a731bda864de5aef39f18307f1

Vendor Advisories for CVE-2026-56771(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 14× in last 7d / 89× 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. 2026-07-27 02:45 UTCGHSA enrichment
  2. 2026-07-26 14:55 UTCEG score recompute
  3. 2026-07-26 14:55 UTCGHSA enrichment
  4. 2026-07-26 14:54 UTCEPSS rescore
  5. 2026-07-26 14:54 UTCEPSS rescore
  6. 2026-07-25 14:18 UTCEPSS rescore
  7. 2026-07-25 14:18 UTCEPSS rescore
  8. 2026-07-24 14:18 UTCEPSS rescore
  9. 2026-07-24 14:18 UTCEPSS rescore
  10. 2026-07-23 14:18 UTCEPSS rescore
  11. 2026-07-23 03:20 UTCEG score recompute
  12. 2026-07-22 14:08 UTCEPSS rescore
  13. 2026-07-21 15:25 UTCEPSS rescore
  14. 2026-07-20 17:08 UTCEPSS rescore
  15. 2026-07-19 14:31 UTCEPSS rescore
  16. 2026-07-19 14:31 UTCEPSS rescore
  17. 2026-07-18 10:04 UTCEPSS rescore
  18. 2026-07-17 05:26 UTCGHSA enrichment
  19. 2026-07-16 17:37 UTCGHSA enrichment
  20. 2026-07-16 17:03 UTCEPSS rescore
  21. 2026-07-16 05:46 UTCGHSA enrichment
  22. 2026-07-15 17:57 UTCGHSA enrichment
  23. 2026-07-15 16:57 UTCEPSS rescore
  24. 2026-07-15 16:57 UTCEPSS rescore
  25. 2026-07-15 06:07 UTCGHSA enrichment
Show 69 more
  1. 2026-07-15 02:00 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-14 18:04 UTCGHSA enrichment
  4. 2026-07-14 06:00 UTCGHSA enrichment
  5. 2026-07-13 22:31 UTCEPSS rescore
  6. 2026-07-13 18:11 UTCGHSA enrichment
  7. 2026-07-13 06:16 UTCGHSA enrichment
  8. 2026-07-13 06:13 UTCEPSS rescore
  9. 2026-07-13 06:13 UTCEPSS rescore
  10. 2026-07-12 18:13 UTCGHSA enrichment
  11. 2026-07-12 06:23 UTCGHSA enrichment
  12. 2026-07-12 05:46 UTCEPSS rescore
  13. 2026-07-11 18:15 UTCGHSA enrichment
  14. 2026-07-11 08:27 UTCEPSS rescore
  15. 2026-07-11 08:27 UTCEPSS rescore
  16. 2026-07-11 06:26 UTCGHSA enrichment
  17. 2026-07-10 18:34 UTCGHSA enrichment
  18. 2026-07-10 06:45 UTCGHSA enrichment
  19. 2026-07-09 19:10 UTCEPSS rescore
  20. 2026-07-09 19:10 UTCEPSS rescore
  21. 2026-07-09 18:50 UTCGHSA enrichment
  22. 2026-07-09 07:01 UTCGHSA enrichment
  23. 2026-07-08 19:11 UTCGHSA enrichment
  24. 2026-07-08 15:16 UTCEPSS rescore
  25. 2026-07-08 15:16 UTCEPSS rescore
  26. 2026-07-08 07:22 UTCGHSA enrichment
  27. 2026-07-07 19:32 UTCGHSA enrichment
  28. 2026-07-07 13:46 UTCEPSS rescore
  29. 2026-07-07 13:46 UTCEPSS rescore
  30. 2026-07-07 07:30 UTCGHSA enrichment
  31. 2026-07-06 19:18 UTCGHSA enrichment
  32. 2026-07-06 16:27 UTCEPSS rescore
  33. 2026-07-06 16:27 UTCEPSS rescore
  34. 2026-07-06 07:27 UTCGHSA enrichment
  35. 2026-07-06 02:23 UTCEPSS rescore
  36. 2026-07-06 02:23 UTCEPSS rescore
  37. 2026-07-05 19:38 UTCGHSA enrichment
  38. 2026-07-05 07:49 UTCGHSA enrichment
  39. 2026-07-05 02:31 UTCEPSS rescore
  40. 2026-07-05 02:30 UTCEPSS rescore
  41. 2026-07-04 19:58 UTCGHSA enrichment
  42. 2026-07-04 08:10 UTCGHSA enrichment
  43. 2026-07-04 06:31 UTCEPSS rescore
  44. 2026-07-04 06:31 UTCEPSS rescore
  45. 2026-07-03 20:19 UTCGHSA enrichment
  46. 2026-07-03 08:30 UTCGHSA enrichment
  47. 2026-07-02 20:41 UTCGHSA enrichment
  48. 2026-07-02 08:51 UTCGHSA enrichment
  49. 2026-07-01 21:00 UTCGHSA enrichment
  50. 2026-07-01 15:07 UTCEPSS rescore
  51. 2026-07-01 09:11 UTCGHSA enrichment
  52. 2026-06-30 23:22 UTCEPSS rescore
  53. 2026-06-30 21:22 UTCGHSA enrichment
  54. 2026-06-30 09:32 UTCGHSA enrichment
  55. 2026-06-29 21:42 UTCGHSA enrichment
  56. 2026-06-29 14:06 UTCEPSS rescore
  57. 2026-06-29 09:53 UTCGHSA enrichment
  58. 2026-06-28 22:04 UTCGHSA enrichment
  59. 2026-06-28 14:07 UTCEPSS rescore
  60. 2026-06-28 10:14 UTCGHSA enrichment
  61. 2026-06-28 04:56 UTCEPSS rescore
  62. 2026-06-28 04:56 UTCEPSS rescore
  63. 2026-06-27 22:24 UTCGHSA enrichment
  64. 2026-06-27 10:35 UTCGHSA enrichment
  65. 2026-06-27 03:08 UTCEPSS rescore
  66. 2026-06-26 22:46 UTCGHSA enrichment
  67. 2026-06-26 10:57 UTCGHSA enrichment
  68. 2026-06-25 19:49 UTCEG score recompute
  69. 2026-06-25 19:49 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-56771?
CVE-2026-56771 is a high vulnerability published on June 25, 2026. NewsBlur before version 14.5.0 contains a server-side request forgery vulnerability in the add_url endpoint that allows authenticated users to make arbitrary server requests to internal networks by failing to filter private IP addresses. Attackers can exploit this to access localhost services and…
When was CVE-2026-56771 disclosed?
CVE-2026-56771 was first published in the National Vulnerability Database on June 25, 2026, with the most recent update on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-56771 actively exploited?
CVE-2026-56771 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 89.4% of all scored CVEs.
What is the CVSS score of CVE-2026-56771?
CVE-2026-56771 has a CVSS v3 base score of 8.5 (NVD).
How do I remediate CVE-2026-56771?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-56771, 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

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