Security readout for executives and security teams
Plain-English summary
Whisper Money before version 0.1.5 lets an authenticated user create or change balances in another user’s bank accounts through the sync/balances endpoint. This is a data-integrity issue, not described as data theft or service disruption. Organizations using Whisper Money should prioritize upgrading because financial records could be altered by legitimate users acting outside their authorization.
Executive priority
Treat as a timely, moderate-priority fix. It requires an authenticated user but can undermine trust in financial records. Upgrade affected deployments to 0.1.5 and review recent balance activity where multi-user access exists.
Technical view
CVE-2026-23844 is an insecure direct object reference in whisper-money/whisper-money versions before 0.1.5. The advisory states a user can update or create account balances in other users’ bank accounts. CVSS v4.0 score is 4.9, with network access, low complexity, low privileges, no user interaction, and high integrity impact.
Likely exposure
Exposure is limited to deployments running Whisper Money versions earlier than 0.1.5. The attacker must already have a user account. The issue affects integrity of bank account balance records through the sync/balances endpoint, based on the advisory description.
Exploitation context
The provided sources do not report active exploitation, and the CVE is not marked as CISA KEV. The CVSS vector lists exploit maturity as unreported. Risk is higher where multiple users share one Whisper Money deployment and account balance integrity is business-critical.
Researcher notes
The bundle identifies an IDOR on sync/balances and a fix in 0.1.5, with references to the advisory, pull request, and commit. Evidence does not include exploit details or active exploitation. The listed CWE is CWE-488 in the supplied record, although the description is IDOR-like.
Mitigation direction
- Upgrade Whisper Money to version 0.1.5 or later.
- Review the GitHub security advisory for vendor guidance.
- Prioritize environments with multiple users or sensitive finance workflows.
- Back up affected application data before remediation if operationally appropriate.
- Review recent balance changes for unauthorized cross-user activity.
Validation and detection
- Inventory deployed Whisper Money versions and identify any below 0.1.5.
- Confirm the running application reports version 0.1.5 or later after upgrade.
- Review authorization logic for sync/balances ownership checks.
- Check application logs for users modifying balances tied to other accounts.
- Track the linked pull request and commit for remediation details.
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-488: 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-2026-23844 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
- Medium
- CVSS
- 4.9 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
4.9MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/whisper-money/whisper-money/security/advisories/GHSA-c4g3-wpxr-2m74CVE reference · x_refsource_CONFIRM
- https://github.com/whisper-money/whisper-money/pull/60CVE reference · x_refsource_MISC
- https://github.com/whisper-money/whisper-money/commit/80117c3edeaf5c5a5166f3815fc555a15b5ce686CVE reference · x_refsource_MISC
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.
Exposure of Data Element to Wrong Session
Exposure of Data Element to Wrong Session represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.