GLPI stands for Gestionnaire Libre de Parc Informatique and it is a Free Asset and IT Management Software package, that provides ITIL Service Desk features, licenses tracking and software auditing. In GLPI before version 9.5.3, any authenticated user has read-only permissions to the planning of every other user, even admin ones. Steps to reproduce the behavior: 1. Create a new planning with 'eduardo.mozart' user (from 'IT' group that belongs to 'Super-admin') into it's personal planning at 'Assistance' > 'Planning'. 2. Copy the CalDAV url and use a CalDAV client (e.g. Thunderbird) to sync the planning with the provided URL. 3. Inform the username and password from any valid user (e.g. 'camila' from 'Proativa' group). 4. 'Camila' has read-only access to 'eduardo.mozart' personal planning. The same behavior happens to any group. E.g. 'Camila' has access to 'IT' group planning, even if she doesn't belong to this group and has a 'Self-service' profile permission). This issue is fixed in version 9.5.3. As a workaround, one can remove the caldav.php file to block access to CalDAV server.
CVE-2020-26212
“—” beside the score: it is equal to NVD's CVSS score.
This high-severity CVE scores 7.7 under NVD CVSS v3. EPSS exploit probability: 1.2% (67th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.
Also known asEUVD-2020-18836 (ENISA EUVD)Source: ENISA EUVD
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.7
- EG Score
- 7.7HIGHmedium 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)Severity77% × 45%Impact severity (EG Severity): CVSS 7.7 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation1.2% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability0% × 15%CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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
- 1.2%
- EPSS %ILE
- 67th
- 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 (7.7): severity, escalated by confirmed exploitation. This CVE's 7.7 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.7 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
- EG Likelihood
- 1.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-28). 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; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade 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; Track* at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines.
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from 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; Fix on system upgrade if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” 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
November 25, 2020
Last Modified
November 21, 2024
Advisory Details (3)
Auto-updated Oct 21, 2026Any CalDAV calendars is read-only for every authenticated user · Advisory · glpi-project/glpi · GitHub
https://github.com/glpi-project/glpi/security/advisories/GHSA-qmw3-87hr-5wgx9.5.3
Patch available: glpi-project/glpi 9.5.3
https://github.com/glpi-project/glpi/releases/tag/9.5.3commit 527280358ec7 (glpi-project/glpi)
Patch available: glpi-project/glpi 11.0.0-rc1 (contains commit 527280358ec7)
https://github.com/glpi-project/glpi/commit/527280358ec78988ac57e9809d2eb21fcd74caf7Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 35× 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 98 of 188 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. 2 repeat rows among the latest 100 are merged into the row they repeat. The 90 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-10-31 16:28 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-30 16:29 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-29 16:28 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-28 19:42 UTCEG score recompute
- 2026-10-28 16:28 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-27 16:28 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-26 16:27 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-25 18:46 UTCEG score recompute
- 2026-10-25 16:28 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-24 16:28 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-23 16:28 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-22 16:29 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-21 16:28 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-21 12:20 UTCEG score recompute
- 2026-10-20 16:28 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-19 16:27 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-18 16:28 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-18 09:26 UTCEG score recompute
- 2026-10-17 16:28 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-16 16:33 UTCEPSS rescoreEPSS 1.2% · 67th percentile
- 2026-10-15 16:27 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-10-14 16:28 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-10-13 16:28 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-10-12 19:39 UTCEG score recompute
- 2026-10-12 16:29 UTCEPSS rescoreEPSS 1.2% · 66th percentile
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- 2026-10-12 00:03 UTCEG score recompute
- 2026-10-11 13:43 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-10-10 19:56 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-10-09 20:04 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-10-09 14:55 UTCOSV refresh
- 2026-10-08 16:38 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-10-07 23:44 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-10-06 15:13 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-10-05 17:39 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-10-04 23:18 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-10-03 14:22 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-09-30 15:16 UTCEG score recompute
- 2026-09-30 14:59 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-09-29 15:14 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-09-27 13:41 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-09-26 15:54 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-09-24 14:00 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-09-22 14:43 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-09-21 20:28 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-09-20 20:11 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-09-19 21:52 UTCOSV refresh
- 2026-09-19 15:37 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-09-18 19:23 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-09-17 19:22 UTCEPSS rescoreEPSS 1.2% · 66th percentile
- 2026-09-16 14:04 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-09-15 03:06 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-09-13 16:43 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-09-12 14:57 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-09-11 09:32 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-09-08 21:56 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-09-07 15:57 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-09-06 13:44 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-09-05 15:24 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-09-04 13:57 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-09-04 05:03 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-09-02 14:08 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-09-01 03:32 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-09-01 01:34 UTCOSV refresh
- 2026-08-30 19:14 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-08-30 01:18 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-27 14:21 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-08-26 14:42 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-08-25 13:45 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-08-21 23:45 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-08-20 22:52 UTCEPSS rescoreEPSS 1.2% · 65th percentile
- 2026-08-19 17:00 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-18 13:44 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-17 13:43 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-16 14:52 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-16 02:11 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-15 01:26 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-15 01:22 UTCOSV refresh
- 2026-08-13 21:57 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-12 13:47 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-09 13:43 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-08 16:33 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-07 16:23 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-06 13:43 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-04 15:06 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-04 10:34 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-02 02:23 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-08-01 04:12 UTCEPSS rescoreEPSS 1.2% · 64th percentile
- 2026-07-30 16:25 UTCEPSS rescoreEPSS 1.2% · 63rd percentile
- 2026-07-30 13:44 UTCOSV refresh
- 2026-07-30 01:27 UTCEPSS rescoreEPSS 1.2% · 63rd percentile
- 2026-07-28 15:33 UTCEPSS rescoreEPSS 1.2% · 63rd percentile
- 2026-07-26 14:51 UTCEPSS rescoreEPSS 1.2% · 63rd percentile
- 2026-07-25 14:15 UTCEPSS rescoreEPSS 1.2% · 63rd percentile
- 2026-07-24 14:14 UTCEPSS rescoreEPSS 1.2% · 63rd percentile
- 2026-07-23 14:15 UTCEPSS rescoreEPSS 1.2% · 63rd percentile
- 2026-07-23 01:51 UTCEG score recompute
- 2026-07-22 22:37 UTCEG score recompute
- 2026-07-22 14:05 UTCEPSS rescoreEPSS 1.2% · 63rd percentile
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Frequently asked(5)
What is CVE-2020-26212?
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Dependency Blast Radius
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