CVE-2026-45377

MEDIUMPre-NVD 6.56.5
EchelonGraph scoreMEDIUM confidence

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

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (37th 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
Elevated
6.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 6.5Exploit: No code on recordExposed 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, the normal download_your_data flow requires the requester to be logged in as the export owner, but the resulting Active Storage blob redirect URL can be replayed without authentication by anyone who obtains it. This is because Decidim::DownloadYourDataController#download_file authenticates the export owner but redirects to a signed Active Storage blob URL that is no longer bound to the owner session. This issue is fixed in versions 0.30.9, 0.31.5, and 0.32.0.rc2.

CVSS v3
6.5
EG Score
6.5MEDIUMmedium confidence
EG Risk
45
EG Risk 45/100

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)
Severity65% × 45%
The EG Score, 6.5 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (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
0.5%
EPSS %ILE
37th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track 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). 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 Jul 31, 2026
Patch available. Sources: github_pr, github.
GitHub advisoryMentions a patch (unverified)

Private exports can be downloaded through reusable links · Advisory · decidim/decidim · GitHub

https://github.com/decidim/decidim/security/advisories/GHSA-767h-63j4-5226
GitHub pull request

Introduce PrivateDownload logic for some downloads

Fix merged in decidim/decidim PR #16680 on 2026-05-08 — awaiting tagged release

https://github.com/decidim/decidim/pull/16680

Vendor Advisories for CVE-2026-45377(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(2)

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.

Showing the most recent 100 of 101 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 1 oldest row on record is not shown and was not checked, so the counts can still include repeats.

  1. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  2. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  3. 2026-10-12 16:01 UTCEG score recompute
  4. 2026-10-11 19:46 UTCEG score recompute
  5. 2026-10-11 17:01 UTCEG score recompute
  6. 2026-10-11 14:26 UTCEG score recompute
  7. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  10. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  11. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  13. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  14. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  15. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  16. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  17. 2026-10-01 14:13 UTCEG score recompute
  18. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 37th percentile
  19. 2026-09-28 09:31 UTCEG score recompute
  20. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  21. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 36th percentile
  22. 2026-09-24 10:05 UTCEG score recompute
  23. 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  24. 2026-09-23 05:25 UTCEG score recompute
  25. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 20th percentile
Show 75 more
  1. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  2. 2026-09-18 05:02 UTCEG score recompute
  3. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  4. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  5. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  6. 2026-09-14 10:26 UTCEG score recompute
  7. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  8. 2026-09-13 08:00 UTCEG score recompute
  9. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  10. 2026-09-12 01:51 UTCEG score recompute
  11. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  12. 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  13. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  14. 2026-09-08 22:52 UTCEG score recompute
  15. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  16. 2026-09-08 01:56 UTCEG score recompute
  17. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  18. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  19. 2026-09-05 21:25 UTCEG score recompute
  20. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  21. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  22. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  23. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  24. 2026-08-30 05:29 UTCEG score recompute
  25. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  26. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  27. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  28. 2026-08-27 14:00 UTCEG score recompute
  29. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  30. 2026-08-26 02:23 UTCEG score recompute
  31. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  32. 2026-08-24 22:37 UTCEG score recompute
  33. 2026-08-23 20:38 UTCEG score recompute
  34. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  35. 2026-08-22 18:39 UTCEG score recompute
  36. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  37. 2026-08-21 16:40 UTCEG score recompute
  38. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  39. 2026-08-20 14:41 UTCEG score recompute
  40. 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  41. 2026-08-19 12:29 UTCEG score recompute
  42. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  43. 2026-08-18 10:29 UTCEG score recompute
  44. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  45. 2026-08-17 07:49 UTCEG score recompute
  46. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  47. 2026-08-16 05:50 UTCEG score recompute
  48. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  49. 2026-08-15 03:52 UTCEG score recompute
  50. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  51. 2026-08-14 01:52 UTCEG score recompute
  52. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  53. 2026-08-12 23:54 UTCEG score recompute
  54. 2026-08-12 13:51 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  55. 2026-08-11 21:55 UTCEG score recompute
  56. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  57. 2026-08-09 17:56 UTCEG score recompute
  58. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  59. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  60. 2026-08-08 15:58 UTCEG score recompute
  61. 2026-08-07 13:58 UTCEG score recompute
  62. 2026-08-06 13:47 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  63. 2026-08-06 11:59 UTCEG score recompute
  64. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  65. 2026-08-05 10:00 UTCEG score recompute
  66. 2026-08-04 15:10 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  67. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  68. 2026-08-04 08:01 UTCEG score recompute
  69. 2026-08-03 10:36 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  70. 2026-08-02 02:33 UTCEG score recompute
  71. 2026-08-02 02:27 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  72. 2026-08-01 00:34 UTCEG score recompute
  73. 2026-07-30 23:03 UTCEG score recompute
  74. 2026-07-26 11:53 UTCEG score recompute
  75. 2026-07-23 03:16 UTCEG score recompute

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-45377?
CVE-2026-45377 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, the normal downloadyourdata flow requires the requester to be logged in as the export owner, but the resulting Active Storage blob redirect URL can be replayed without…
When was the CVE record for CVE-2026-45377 published?
The CVE record for CVE-2026-45377 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-2026-45377 actively exploited?
CVE-2026-45377 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (37th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-45377?
CVE-2026-45377 has a CVSS base score of 6.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-45377?
A fix for CVE-2026-45377 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-45377 are linked in the Vendor Advisories panel on this page.

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