Security readout for executives and security teams
Plain-English summary
Affected miniOrange Joomla single sign-on extensions may let an unauthenticated attacker alter a cookie and sign in as any account, including an administrator. Successful compromise could expose or alter site data, administrative settings, and connected services. The supplied record rates the issue critical with CVSS 10.0.
Executive priority
Treat as an immediate remediation priority for affected internet-facing Joomla systems. The potential for unauthenticated administrator takeover and the maximum CVSS score justify urgent inventory, upgrade, and compromise review. Systems without the named extensions or outside the listed version ranges are not identified as affected by these sources.
Technical view
CVE-2026-77995 is an authorization failure classified as CWE-639. A manipulated cookie value can reportedly select an arbitrary account without privileges or user interaction. The affected ranges are miniOrange OAuth Client 1.0.0–3.1.9 and three listed Joomla SSO extensions 1.0.0–1.2.1.
Likely exposure
Exposure is likely where a Joomla site has one of the four named free extensions within an affected version range. Internet-accessible login or SSO functionality increases practical risk. The sources do not identify affected paid editions, configuration prerequisites, or reliable external detection indicators.
Exploitation context
The CVSS 4.0 vector describes remote, low-complexity, unauthenticated exploitation requiring no user interaction, with high confidentiality, integrity, and availability impact. The supplied bundle marks the CVE as absent from KEV and provides no evidence of active exploitation, public proof-of-concept code, or observed campaigns.
Researcher notes
The public record attributes account selection to cookie manipulation but does not identify the cookie, validation flaw, prerequisites, indicators, or patch implementation. Validate exposure through extension metadata and controlled authentication testing. Avoid assuming related miniOrange products are affected. Vendor-specific remediation guidance was not included beyond the version boundaries represented by the affected ranges.
Mitigation direction
- Inventory Joomla sites for the four named miniOrange extensions and record installed versions.
- Upgrade miniOrange OAuth Client to 3.2.0 or later after confirming vendor guidance.
- Upgrade each affected 1.2.1-or-earlier SSO extension to 1.2.2 or later, subject to vendor confirmation.
- Restrict or disable affected SSO functionality until upgrades are completed where operationally feasible.
- Review privileged accounts, sessions, and administrative changes for suspicious activity.
Validation and detection
- Confirm installed extension names and versions directly in each Joomla deployment.
- Verify miniOrange OAuth Client is version 3.2.0 or later.
- Verify each other named extension is version 1.2.2 or later.
- Test legitimate SSO and authorization behavior after remediation without attempting account impersonation.
- Review authentication logs for anomalous administrator access or unexpected account selection.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-639: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-77995 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Critical
- CVSS
- 10 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H——JoomlaVulnerability scoring details
Base CVSS 4.0 score
10CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://www.miniorange.com/CVE reference, Joomla · product
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Authorization Bypass Through User-Controlled Key
Authorization Bypass Through User-Controlled Key represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.