Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, EventSerializer could expose invited group names, sample invitees, and attendance statistics to users who could view the topic but were not entitled to view the private event invitee list. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.
CVE-2026-45780
“—” beside the score: it is equal to NVD's CVSS score.
This medium-severity CVE scores 4.3 under NVD CVSS v3. EPSS exploit probability: 0.5% (42nd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2026-42740 (ENISA EUVD)Source: ENISA EUVD
- Lower severity and no public exploit yet
The CVE record names the fixed release — apply it.
- CVSS v3
- 4.3
- EG Score
- 4.3MEDIUMmedium confidence
- EG Risk
- 35EG Risk 35/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity43% × 45%Impact severity (EG Severity): CVSS 4.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation0.5% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable yes (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: The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 0.5%
- EPSS %ILE
- 42nd
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (4.3): severity, escalated by confirmed exploitation. This CVE's 4.3 is its impact severity (EG Severity), not escalated.
- EG Severity
- 4.3 MEDIUMCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
- EG Likelihood
- 0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-24). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).
The CVE record names the fixed release. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation none (CISA Vulnrichment) · Automatable yes (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)14 days if the affected system is publicly exposed; 60 days if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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 9, 2026
Last Modified
July 14, 2026
Advisory Details (5)
Auto-updated Jul 9, 2026Private event sample invitees are serialized to non-invited event viewers · Advisory · discourse/discourse · GitHub
https://github.com/discourse/discourse/security/advisories/GHSA-22v7-6wgj-g9f7commit 7deb4b696344 (discourse/discourse)
Fix landed in discourse/discourse commit 7deb4b696344 — awaiting tagged release
https://github.com/discourse/discourse/commit/7deb4b6963442569357b41e61febe37594e5e730commit 6457ab71f36a (discourse/discourse)
Fix landed in discourse/discourse commit 6457ab71f36a — awaiting tagged release
https://github.com/discourse/discourse/commit/6457ab71f36a2d1440fe96af0a2593897844b023commit 4d46638041b5 (discourse/discourse)
Fix landed in discourse/discourse commit 4d46638041b5 — awaiting tagged release
https://github.com/discourse/discourse/commit/4d46638041b5f3d1e1f7f6f6f19c1df3bd65a586commit 37969503f203 (discourse/discourse)
Fix landed in discourse/discourse commit 37969503f203 — awaiting tagged release
https://github.com/discourse/discourse/commit/37969503f20369eb1712b7b88daedcfb4f63f5f1Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 37× 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 156 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 56 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-30 15:25 UTCOSV refresh
- 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
- 2026-10-25 14:26 UTCEG score recompute
- 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-23 16:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-22 23:33 UTCEG score recompute
- 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-18 03:37 UTCEG score recompute
- 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 40th percentile
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- 2026-10-12 16:04 UTCEG score recompute
- 2026-10-11 19:46 UTCEG score recompute
- 2026-10-11 17:00 UTCEG score recompute
- 2026-10-11 14:26 UTCEG score recompute
- 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-10-01 16:00 UTCEG score recompute
- 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-09-28 09:59 UTCEG score recompute
- 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-09-24 11:22 UTCEG score recompute
- 2026-09-23 17:53 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-09-23 05:51 UTCEG score recompute
- 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-09-18 05:26 UTCEG score recompute
- 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-09-14 05:58 UTCEG score recompute
- 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-09-13 08:16 UTCEG score recompute
- 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-09-12 03:19 UTCEG score recompute
- 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-09-11 09:37 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.5% · 41st percentile
- 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-09-08 03:23 UTCEG score recompute
- 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-09-05 22:00 UTCEG score recompute
- 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-08-30 06:42 UTCEG score recompute
- 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-08-27 21:43 UTCEG score recompute
- 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-08-26 12:54 UTCEG score recompute
- 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.5% · 40th percentile
- 2026-08-25 11:53 UTCEG score recompute
- 2026-08-24 14:12 UTCEG score recompute
- 2026-08-23 16:22 UTCEG score recompute
- 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.4% · 29th percentile
- 2026-08-22 18:41 UTCEG score recompute
- 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.4% · 29th percentile
- 2026-08-20 23:19 UTCEG score recompute
- 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.4% · 29th percentile
- 2026-08-20 01:38 UTCEG score recompute
- 2026-08-19 17:04 UTCEPSS rescoreEPSS 0.4% · 29th percentile
- 2026-08-19 01:26 UTCEG score recompute
- 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.4% · 29th percentile
- 2026-08-18 03:45 UTCEG score recompute
- 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.4% · 29th percentile
- 2026-08-17 06:04 UTCEG score recompute
- 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.4% · 29th percentile
- 2026-08-16 07:42 UTCEG score recompute
- 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.4% · 29th percentile
- 2026-08-15 10:02 UTCEG score recompute
- 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.4% · 29th percentile
- 2026-08-14 12:20 UTCEG score recompute
- 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.4% · 29th percentile
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Frequently asked(5)
What is CVE-2026-45780?
When was the CVE record for CVE-2026-45780 published?
Is CVE-2026-45780 actively exploited?
What is the CVSS score of CVE-2026-45780?
How do I remediate CVE-2026-45780?
Dependency Blast Radius
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