CVE-2026-24772

CRITICALNVD 9.09.0
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.0 under NVD CVSS v3. EPSS exploit probability: 0.2% (7th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3

Also known asEUVD-2026-4877 (ENISA EUVD)Source: ENISA EUVD

9.0EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 9.0Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

OpenProject is an open-source, web-based project management software. To enable the real time collaboration on documents, OpenProject 17.0 introduced a synchronization server. The OpenPrioject backend generates an authentication token that is currently valid for 24 hours, encrypts it with a shared secret only known to the synchronization server. The frontend hands this encrypted token and the backend URL over to the synchronization server to check user's ability to work on the document and perform intermittent saves while editing. The synchronization server does not properly validate the backend URL and sends a request with the decrypted authentication token to the endpoint that was given to the server. An attacker could use this vulnerability to decrypt a token that he intercepted by other means to gain an access token to interact with OpenProject on the victim's behalf. This vulnerability was introduced with OpenProject 17.0.0 and was fixed in 17.0.2. As a workaround, disable the collaboration feature via Settings -> Documents -> Real time collaboration -> Disable. Additionally the hocuspocus container should also be disabled.

CVSS v3
9.0
EG Score
9.0CRITICALmedium confidence
EG Risk
41
EG Risk 41/100

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)
Severity90% × 45%
Impact severity (EG Severity): CVSS 9.0 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 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: The CVE record names the fixed release. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
7th
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 (9.0): severity, escalated by confirmed exploitation. This CVE's 9.0 is its impact severity (EG Severity), not escalated.

EG Severity
9.0 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). 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 every mission impact level.CISA BOD 26-04: 60 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 every mission impact level.

The CVE record names the fixed release. 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.

The score's inputs: 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

January 28, 2026

Last Modified

June 17, 2026

Advisory Details (1)

Auto-updated Jun 8, 2026
Fix named in the CVE record. Sources: github.
GitHub advisoryMentions a patch (unverified)

SSRF and CSWSH in Hocuspocus Synchronization Server · Advisory · opf/openproject · GitHub

Affected: 17.0.2

https://github.com/opf/openproject/security/advisories/GHSA-r854-p5qj-x974

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 57× 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 99 of 222 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 123 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 06:26 UTCEG score recompute
  2. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  3. 2026-11-01 08:22 UTCEG score recompute
  4. 2026-10-31 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
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  19. 2026-10-24 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
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  1. 2026-10-21 04:15 UTCEG score recompute
  2. 2026-10-20 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  3. 2026-10-20 06:12 UTCEG score recompute
  4. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  5. 2026-10-19 08:01 UTCEG score recompute
  6. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.2% · 7th percentile
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  8. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.2% · 7th percentile
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  10. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.2% · 7th percentile
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  12. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.2% · 7th percentile
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  14. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  15. 2026-10-14 09:32 UTCEG score recompute
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  22. 2026-10-11 14:46 UTCEG score recompute
  23. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.2% · 7th percentile
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  25. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  26. 2026-10-09 09:55 UTCOSV refresh
  27. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  28. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.2% · 7th percentile
  29. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.2% · 7th percentile
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  34. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 7th percentile
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  40. 2026-09-24 14:03 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  41. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  42. 2026-09-19 17:03 UTCOSV refresh
  43. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  44. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.2% · 6th percentile
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  57. 2026-08-31 20:34 UTCOSV refresh
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  73. 2026-08-14 12:00 UTCEG score recompute
  74. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile

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Frequently asked(5)

What is CVE-2026-24772?
CVE-2026-24772 is a critical-severity vulnerability; its CVE record was published on January 28, 2026. OpenProject is an open-source, web-based project management software. To enable the real time collaboration on documents, OpenProject 17.0 introduced a synchronization server. The OpenPrioject backend generates an authentication token that is currently valid for 24 hours, encrypts it with a shared…
When was the CVE record for CVE-2026-24772 published?
The CVE record for CVE-2026-24772 was published on January 28, 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 June 17, 2026; the record at its source may have been updated since.
Is CVE-2026-24772 actively exploited?
CVE-2026-24772 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (7th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-24772?
CVE-2026-24772 has a CVSS v3 base score of 9.0 (NVD).
How do I remediate CVE-2026-24772?
The CVE record for CVE-2026-24772 names the fix: "This vulnerability was introduced with OpenProject 17.0.0 and was fixed in 17.0.2."

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