CVE-2026-10295 Overview
CVE-2026-10295 is a denial of service vulnerability in SourceCodester Customer Review App 1.0. The flaw resides in the add_review, save_review, and get_all_reviews functions within review_app.py. An attacker with local access can manipulate the name or comment arguments to trigger improper resource handling [CWE-404], causing the application to become unresponsive.
The vulnerability requires local access and low privileges. A public exploit has been disclosed, increasing the likelihood of opportunistic abuse. The issue is categorized as low severity due to its limited impact scope and the local attack prerequisite.
Critical Impact
Local attackers can disrupt availability of the Customer Review App by submitting malformed input to review handling functions, with public exploit code already disclosed.
Affected Products
- SourceCodester Customer Review App 1.0
- review_app.py component
- Deployments exposing add_review, save_review, or get_all_reviews functions
Discovery Timeline
- 2026-06-01 - CVE-2026-10295 published to NVD
- 2026-06-02 - Last updated in NVD database
Technical Details for CVE-2026-10295
Vulnerability Analysis
The vulnerability stems from improper resource shutdown or release [CWE-404] in the review-handling logic of review_app.py. Three functions are impacted: add_review, save_review, and get_all_reviews. Each accepts user-controlled name and comment arguments without enforcing proper resource boundaries or cleanup on failure paths.
When an attacker supplies crafted input through these arguments, the application fails to release allocated resources correctly. Repeated invocations exhaust available resources and lead to a denial of service condition. The flaw is limited to availability impact and does not affect confidentiality or integrity of stored review data.
Public disclosure of the proof-of-concept has occurred via Pastebin and VulDB. See the VulDB CVE-2026-10295 entry for technical specifics.
Root Cause
The root cause is missing resource management within the review processing functions. The application does not release or close resources after handling abnormal input through the name and comment parameters. This omission allows accumulated resource consumption to degrade service availability.
Attack Vector
The attack vector is local. An attacker requires existing low-privilege access on the system hosting the Customer Review App. The attacker invokes add_review, save_review, or get_all_reviews with manipulated name or comment arguments. No user interaction is required to complete the attack. Successful exploitation interrupts the availability of the application but does not yield code execution or data access.
Refer to the Pastebin Security Post for additional disclosure details.
Detection Methods for CVE-2026-10295
Indicators of Compromise
- Repeated calls to add_review, save_review, or get_all_reviews with unusually large or malformed name/comment values
- Application process crashes or hangs correlated with review submission activity
- Sudden growth in memory or file handle usage by the review_app.py process
Detection Strategies
- Instrument the Customer Review App to log all invocations of the three affected functions, including argument sizes and source process identifiers
- Establish baselines for normal review submission patterns and alert on deviations
- Inspect local audit logs for repeated submissions from a single low-privilege user account
Monitoring Recommendations
- Track process resource consumption for the Python interpreter running review_app.py
- Monitor for unexpected restarts or unresponsiveness of the review service
- Correlate local user session activity with review submission spikes
How to Mitigate CVE-2026-10295
Immediate Actions Required
- Restrict local access to systems running SourceCodester Customer Review App 1.0 to trusted users only
- Audit existing user accounts on hosts running the application and remove unnecessary local privileges
- Disable or remove the Customer Review App if it is not required in production environments
Patch Information
No official vendor patch has been published in the referenced advisories. Monitor SourceCodester Security Resources and the VulDB Vulnerability #367588 entry for updates. Apply input validation and resource cleanup fixes to review_app.py if maintaining a forked or self-hosted copy.
Workarounds
- Add input length and type validation to the name and comment parameters before they reach add_review, save_review, and get_all_reviews
- Wrap resource allocations in the affected functions with try/finally constructs to enforce cleanup on error paths
- Apply local operating system rate limiting or process resource quotas (ulimit, cgroups) to contain resource exhaustion attempts
- Isolate the Customer Review App in a dedicated low-privilege service account with constrained resource limits
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
