Security readout for executives and security teams
Plain-English summary
CVE-2026-27632 affects Talishar, a fan-made Flesh and Blood project. Older versions lack CSRF protections on chat and game action endpoints. A malicious site could cause an authenticated player to perform unintended in-game actions, but only under specific conditions. The published severity is low.
Executive priority
Treat as a low-priority fix unless Talishar is publicly hosted or heavily used. Apply the fixed commit during normal maintenance, because the impact is limited but user trust and game integrity can be affected.
Technical view
Before commit 6be3871a14c192d1fb8146cdbc76f29f27c1cf48, Talishar did not require unique, unpredictable CSRF tokens on critical state-changing endpoints, including SubmitChat.php and other game interaction handlers. Exploitation requires user interaction, an authenticated active game session, and attacker knowledge of gameName and playerID. CWE-352 applies. CVSS v3.1 is 2.6.
Likely exposure
Exposure appears limited to Talishar deployments running code before commit 6be3871a14c192d1fb8146cdbc76f29f27c1cf48. The issue is relevant when users play while authenticated and can be induced to interact with a malicious website.
Exploitation context
No provided source states active exploitation, and it is not listed as KEV. Practical exploitation requires multiple conditions: authenticated player, active session, user interaction with a malicious site, and attacker knowledge of the gameName and playerID.
Researcher notes
Evidence is limited to the CVE record and GitHub advisory metadata in the provided bundle. The advisory identifies the fixed commit and affected endpoint class but does not provide broader exploit telemetry. Avoid assuming impact outside Talishar or versions before the named commit.
Mitigation direction
- Update Talishar to commit 6be3871a14c192d1fb8146cdbc76f29f27c1cf48 or later.
- Review the GitHub advisory for any additional vendor guidance.
- Ensure state-changing game and chat endpoints require unpredictable CSRF tokens.
Validation and detection
- Identify the deployed Talishar commit or release version.
- Confirm it is at or after commit 6be3871a14c192d1fb8146cdbc76f29f27c1cf48.
- Verify SubmitChat.php and game handlers enforce CSRF token checks.
- Confirm unauthorized cross-site requests cannot change game state.
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-352: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2026-27632 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
- Low
- CVSS
- 2.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
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.
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:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N1.21.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
2.6LowVector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/Talishar/Talishar/security/advisories/GHSA-73mm-323r-cm3gCVE reference · x_refsource_CONFIRM
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.
Cross-Site Request Forgery (CSRF)
Cross-Site Request Forgery (CSRF) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.