CVE-2026-45573

MEDIUMPre-NVD 6.46.4
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (16th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
6.4EG
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: 0.3%CVSS: 6.4Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Decidim is a participatory democracy framework. Prior to 0.30.9, from 0.31.0 before 0.31.5, and in 0.32.0.rc1 before 0.32.0.rc2, when VAPID delivery is enabled, the notification subscription flow stores a client-supplied push endpoint without validating that it belongs to an approved push service, and SendPushNotification later passes that endpoint to WebPush.payload_send, allowing an authenticated user to create stored, mostly blind server-side requests to arbitrary reachable HTTPS endpoints. This issue is fixed in versions 0.30.9, 0.31.5, and 0.32.0.rc2.

CVSS v3
6.4
EG Score
6.4MEDIUMmedium confidence
EG Risk
29
EG Risk 29/100

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)
Severity64% × 45%
The EG Score, 6.4 of 10.
Exploitation0.3% × 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: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
16th
KEV
Not listed

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

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

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

July 13, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Aug 6, 2026
Patch available. Sources: github_pr, github.
GitHub advisoryMentions a patch (unverified)

Push subscriptions can be abused for server-side requests · Advisory · decidim/decidim · GitHub

https://github.com/decidim/decidim/security/advisories/GHSA-2g9c-vf8h-prxx
GitHub pull request

Check that the endpoint is supported on Web Push notifications

Fix merged in decidim/decidim PR #16714 on 2026-05-07 — awaiting tagged release

https://github.com/decidim/decidim/pull/16714

Vendor Advisories for CVE-2026-45573(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
RubyGems(1)
PackageVulnerable rangeFix by version rangeDependents
decidim-core0.32.0.rc1, 0.32.0.rc2, 0.32.0.rc3
  • every version up to 0.30.9: fixed in 0.30.9
  • 0.31.0.rc1 up to 0.31.5: fixed in 0.31.5
  • 0.32.0.rc1 up to 0.32.0: fixed in 0.32.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 30× 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.

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

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Frequently asked(5)

What is CVE-2026-45573?
CVE-2026-45573 is a medium-severity vulnerability; its CVE record was published on July 13, 2026. Decidim is a participatory democracy framework. Prior to 0.30.9, from 0.31.0 before 0.31.5, and in 0.32.0.rc1 before 0.32.0.rc2, when VAPID delivery is enabled, the notification subscription flow stores a client-supplied push endpoint without validating that it belongs to an approved push service,…
When was the CVE record for CVE-2026-45573 published?
The CVE record for CVE-2026-45573 was published on July 13, 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 September 8, 2026; the record at its source may have been updated since.
Is CVE-2026-45573 actively exploited?
CVE-2026-45573 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (16th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45573?
CVE-2026-45573 has a CVSS base score of 6.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-45573?
A fix for CVE-2026-45573 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-45573 are linked in the Vendor Advisories panel on this page.

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