CVE-2026-77614

HIGHPre-NVD 8.88.8
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5% (45th 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

Also known asEUVD-2026-81625 (ENISA EUVD)Source: ENISA EUVD

8.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (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: 8.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Opencast is a free, open-source platform to support the management of educational audio and video content. Prior to versions 19.7 and 20.2, the default security configuration in etc/security/mh_default_org.xml accepts a client-selected JSESSIONID from the ;jsessionid= URL path parameter and does not replace it when the victim logs in. An unauthenticated attacker can send a crafted link to a victim whose browser has no active Opencast session cookie, wait for the victim to authenticate, and then reuse the known identifier as the victim's authenticated session. This can expose the victim's data and actions and can produce full administrative account takeover when the victim is an administrator. This issue is fixed in versions 19.7 and 20.2.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100

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)
Severity88% × 45%
Impact severity (EG Severity): CVSS 8.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
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, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.5%
EPSS %ILE
45th
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 (8.8): severity, escalated by confirmed exploitation. This CVE's 8.8 is its impact severity (EG Severity), not escalated.

EG Severity
8.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.5% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). 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, Track* at medium and Attend at high mission impact.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, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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; 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 total (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

September 17, 2026

Last Modified

September 30, 2026

Advisory Details (5)

Auto-updated Sep 17, 2026
Patch available. Sources: github, github_commit, github_release.
GitHub release Patch Available

Opencast 20.2

Patch available: opencast/opencast 20.2

https://github.com/opencast/opencast/releases/tag/20.2
GitHub release Patch Available

Opencast 19.7

Patch available: opencast/opencast 19.7

https://github.com/opencast/opencast/releases/tag/19.7
GitHub commit

commit ff84128c9b3b (opencast/opencast)

Fix landed in opencast/opencast commit ff84128c9b3b — awaiting tagged release

https://github.com/opencast/opencast/commit/ff84128c9b3bcbd79c28192d25929dab8faf185f
GitHub commit

commit c36652250a02 (opencast/opencast)

Fix landed in opencast/opencast commit c36652250a02 — awaiting tagged release

https://github.com/opencast/opencast/commit/c36652250a026afb7cf78b663950c702669f1d3f
GitHub advisoryMentions a patch (unverified)

Session fixation in login enables account takeover via crafted link · Advisory · opencast/opencast · GitHub

https://github.com/opencast/opencast/security/advisories/GHSA-6f53-jp7x-gg7p

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 47× 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. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  2. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.5% · 46th percentile
  3. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  4. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  5. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  6. 2026-10-27 17:25 UTCEG score recompute
  7. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  8. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  9. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  10. 2026-10-25 14:01 UTCEG score recompute
  11. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  12. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  13. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  14. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.5% · 45th percentile
  15. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  16. 2026-10-19 17:51 UTCEG score recompute
  17. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  18. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  19. 2026-10-18 03:11 UTCEG score recompute
  20. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  21. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  22. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  23. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  24. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  25. 2026-10-13 06:55 UTCEG score recompute
Show 54 more
  1. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  2. 2026-10-12 15:37 UTCEG score recompute
  3. 2026-10-11 19:23 UTCEG score recompute
  4. 2026-10-11 16:39 UTCEG score recompute
  5. 2026-10-11 13:57 UTCEG score recompute
  6. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  7. 2026-10-10 23:50 UTCEG score recompute
  8. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  9. 2026-10-09 22:13 UTCEG score recompute
  10. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  11. 2026-10-08 20:29 UTCEG score recompute
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  13. 2026-10-08 06:56 UTCEG score recompute
  14. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  15. 2026-10-06 15:42 UTCEG score recompute
  16. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  17. 2026-10-06 02:41 UTCEG score recompute
  18. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  19. 2026-10-05 01:05 UTCEG score recompute
  20. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  21. 2026-10-03 23:12 UTCEG score recompute
  22. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  23. 2026-10-02 21:29 UTCEG score recompute
  24. 2026-10-02 08:32 UTCEG score recompute
  25. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  26. 2026-09-30 18:08 UTCEG score recompute
  27. 2026-09-30 00:52 UTCEG score recompute
  28. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  29. 2026-09-28 23:14 UTCEG score recompute
  30. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  31. 2026-09-27 21:38 UTCEG score recompute
  32. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  33. 2026-09-26 20:01 UTCEG score recompute
  34. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  35. 2026-09-26 07:10 UTCEG score recompute
  36. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  37. 2026-09-24 16:39 UTCEG score recompute
  38. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  39. 2026-09-24 03:39 UTCEG score recompute
  40. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  41. 2026-09-23 02:01 UTCEG score recompute
  42. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  43. 2026-09-22 00:24 UTCEG score recompute
  44. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  45. 2026-09-20 22:48 UTCEG score recompute
  46. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  47. 2026-09-19 21:12 UTCEG score recompute
  48. 2026-09-18 19:34 UTCEG score recompute
  49. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  50. 2026-09-17 17:58 UTCEG score recompute
  51. 2026-09-17 15:44 UTCEG score recompute
  52. 2026-09-17 15:23 UTCEG score recompute
  53. 2026-09-17 14:34 UTCEG score recomputeFirst assessed: 8.8 HIGH
  54. 2026-09-17 14:34 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-77614?
CVE-2026-77614 is a high-severity vulnerability; its CVE record was published on September 17, 2026. Opencast is a free, open-source platform to support the management of educational audio and video content. Prior to versions 19.7 and 20.2, the default security configuration in etc/security/mh_default_org.xml accepts a client-selected JSESSIONID from the ;jsessionid= URL path parameter and does…
When was the CVE record for CVE-2026-77614 published?
The CVE record for CVE-2026-77614 was published on September 17, 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 30, 2026; the record at its source may have been updated since.
Is CVE-2026-77614 actively exploited?
CVE-2026-77614 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (45th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-77614?
CVE-2026-77614 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-77614?
A fix for CVE-2026-77614 is available: update to the fixed version the vendor names in its advisory.

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