Insufficient Session Expiration vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.1.
Administrative API keys remained usable after the owning administrator was demoted or the account was marked inactive, suspended, or deleted, allowing continued access until the keys were explicitly removed. Users are recommended to upgrade to version 2.0.2, which fixes the issue.
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.1.
Deleted or pending answers could be retrieved by unauthorized users through the single-answer read path when the parent question remained visible, exposing answer content that should not have been accessible. Users are recommended to upgrade to version 2.0.2, which fixes the issue.
Improper Handling of Length Parameter Inconsistency vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.1.
Unauthenticated attackers can cause a denial of service via a specially crafted Accept-Language header that triggers excessive CPU consumption during parsing. Users are recommended to upgrade to version 2.0.2, which fixes the issue.
Insufficient Verification of Data Authenticity vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.1.
A missing authorization check in the external-login email binding flow allows unauthenticated attackers to take over arbitrary user accounts by tricking victims into clicking a crafted confirmation link. Users are recommended to upgrade to version 2.0.2, which fixes the issue.
Improper Input Validation vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.1.
A missing ownership check in the avatar-cleanup logic allows any authenticated user to delete other users' uploaded files by supplying their file URLs. Users are recommended to upgrade to version 2.0.2, which fixes the issue.
Improper Authorization vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.1.
Any authenticated user can reject arbitrary pending edit-revisions without review permission due to a missing authorization check on the reject operation. Users are recommended to upgrade to version 2.0.2, which fixes the issue.
Severity: important
Affected versions:
- Apache Answer through 2.0.1
Description:
Improper Authorization vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.1.
Any authenticated user can reject arbitrary pending edit-revisions without review permission due to a missing authorization check on the reject operation. Users are recommended to upgrade to version 2.0.2, which fixes the issue.
Credit:
tonghuaroot (reporter) Mattia Campanelli (reporter) Cavan Loughran (reporter) Xi Yang (reporter)
References:
https://answer.apache.org https://www.cve.org/CVERecord?id=CVE-2026-50749
Improper Restriction of Security Token Assignment vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.0.
Previously issued administrative tokens were not invalidated after an administrator account was suspended, deleted, or deactivated, allowing continued access to administrative APIs until the token expired. Users are recommended to upgrade to version 2.0.1, which fixes the issue.
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.0.
The unlisted question feature did not enforce access restrictions on direct API endpoints, allowing authenticated users to discover and access unlisted questions, their answers, comments, and revision history. Users are recommended to upgrade to version 2.0.1, which fixes the issue.
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.0.
User-supplied content was included in notification emails without proper escaping, allowing authenticated users to inject arbitrary HTML into emails sent to other users. Users are recommended to upgrade to version 2.0.1, which fixes the issue.
Unrestricted Upload of File with Dangerous Type vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.0.
The server did not sufficiently validate user-supplied image URLs, allowing arbitrary external content to be embedded as profile images, which could expose users to unintended external requests and tracking by third-party servers. Users are recommended to upgrade to version 2.0.1, which fixes the issue.
Unrestricted Upload of File with Dangerous Type vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.0.
A crafted TIFF image could trigger excessive memory allocation during image decoding, allowing an authenticated user to cause the server process to crash. Users are recommended to upgrade to version 2.0.1, which fixes the issue.
Exposure of Private Personal Information to an Unauthorized Actor vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.0.
Timeline-related APIs lacked proper authorization checks, allowing regular authenticated users to access deleted, private, or unapproved content and its revision history. Users are recommended to upgrade to version 2.0.1, which fixes the issue.
Improper Neutralization of Alternate XSS Syntax vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.0.
AI-generated response content was rendered in the browser without proper sanitization, allowing malicious scripts to be executed when the content was viewed. Users are recommended to upgrade to version 2.0.1, which fixes the issue.
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Answer. This issue affects Apache Answer through 1.2.1.
Repeated submission during registration resulted in the registration of the same user. When users register, if they rapidly submit multiple registrations using scripts, it can result in the creation of multiple user accounts simultaneously with the same name.
Users are recommended to upgrade to version 1.2.5, which fixes the issue.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache Answer. This issue affects Apache Answer through 1.2.1.
XSS attack when user enters summary. A logged-in user, when modifying their own submitted question, can input malicious code in the summary to create such an attack.
Users are recommended to upgrade to version 1.2.5, which fixes the issue.
Unrestricted Upload of File with Dangerous Type vulnerability in Apache Answer. This issue affects Apache Answer through 1.2.1.
Pixel Flood Attack by uploading large pixel files will cause server out of memory. A logged-in user can cause such an attack by uploading an image when posting content.
Users are recommended to upgrade to version 1.2.5, which fixes the issue.
Severity: important
Affected versions:
- Apache Answer through 2.0.0
Description:
Improper Restriction of Security Token Assignment vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.0.
Previously issued administrative tokens were not invalidated after an administrator account was suspended, deleted, or deactivated, allowing continued access to administrative APIs until the token expired. Users are recommended to upgrade to version 2.0.1, which fixes the issue.
Credit:
Sho Odagiri (reporter)
References:
https://answer.apache.org https://www.cve.org/CVERecord?id=CVE-2026-25700
Severity: important
Affected versions:
- Apache Answer through 2.0.0
Description:
Exposure of Private Personal Information to an Unauthorized Actor vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.0.
Timeline-related APIs lacked proper authorization checks, allowing regular authenticated users to access deleted, private, or unapproved content and its revision history. Users are recommended to upgrade to version 2.0.1, which fixes the issue.
Credit:
Sho Odagiri (reporter)
References:
https://answer.apache.org https://www.cve.org/CVERecord?id=CVE-2026-25699
Severity: important
Affected versions:
- Apache Answer through 2.0.0
Description:
Unrestricted Upload of File with Dangerous Type vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.0.
A crafted TIFF image could trigger excessive memory allocation during image decoding, allowing an authenticated user to cause the server process to crash. Users are recommended to upgrade to version 2.0.1, which fixes the issue.
Credit:
Andy Gill, ZephrSec Ltd (reporter)
References:
https://answer.apache.org https://www.cve.org/CVERecord?id=CVE-2026-33582
Severity: important
Affected versions:
- Apache Answer through 2.0.0
Description:
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.0.
User-supplied content was included in notification emails without proper escaping, allowing authenticated users to inject arbitrary HTML into emails sent to other users. Users are recommended to upgrade to version 2.0.1, which fixes the issue.
Credit:
Reimar Fritz (reporter)
References:
https://answer.apache.org https://www.cve.org/CVERecord?id=CVE-2026-34033
Severity: moderate
Affected versions:
- Apache Answer through 2.0.0
Description:
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Answer.
This issue affects Apache Answer: through 2.0.0.
The unlisted question feature did not enforce access restrictions on direct API endpoints, allowing authenticated users to discover and access unlisted questions, their answers, comments, and revision history. Users are recommended to upgrade to version 2.0.1, which fixes the issue.
Credit:
Hamed Kohi (reporter)
References:
https://answer.apache.org https://www.cve.org/CVERecord?id=CVE-2026-34905
Exposure of Private Personal Information to an Unauthorized Actor vulnerability in Apache Answer.
This issue affects Apache Answer: through 1.7.1.
An unauthenticated API endpoint incorrectly exposes full revision history for deleted content. This allows unauthorized user to retrieve restricted or sensitive information. Users are recommended to upgrade to version 2.0.0, which fixes the issue.
Severity: important
Affected versions:
- Apache Answer through 1.7.1
Description:
Exposure of Private Personal Information to an Unauthorized Actor vulnerability in Apache Answer.
This issue affects Apache Answer: through 1.7.1.
An unauthenticated API endpoint incorrectly exposes full revision history for deleted content. This allows unauthorized user to retrieve restricted or sensitive information. Users are recommended to upgrade to version 2.0.0, which fixes the issue.
Credit:
Sho Odagiri of GMO Cybersecurity by Ierae, Inc. (reporter)
References:
https://answer.apache.org https://www.cve.org/CVERecord?id=CVE-2026-24735
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Answer.
This issue affects Apache Answer: through 1.2.0.
Under normal circumstances, a user can only bookmark a question once, and will only increase the number of questions bookmarked once. However, repeat submissions through the script can increase the number of collection of the question many times.
Users are recommended to upgrade to version [1.2.1], which fixes the issue.
Private Data Structure Returned From A Public Method vulnerability in Apache Answer.
This issue affects Apache Answer: through 1.4.2.
If a user uses an externally referenced image, when a user accesses this image, the provider of the image may obtain private information about the ip address of that accessing user. Users are recommended to upgrade to version 1.4.5, which fixes the issue. In the new version, administrators can set whether external content can be displayed.
On 3/31/25 21:44, Enxin Xie wrote: [...]
Description:
Private Data Structure Returned From A Public Method vulnerability in Apache Answer.
This issue affects Apache Answer: through 1.4.2.
If a user uses an externally referenced image, when a user accesses this image, the provider of the image may obtain private information about the ip address of that accessing user. Users are recommended to upgrade to version 1.4.5, which fixes the issue. In the new version, administrators can set whether external content can be displayed. This hits two major pet peeves of mine:
-- Jacob
Severity: low
Affected versions:
- Apache Answer through 1.4.2
Description:
Private Data Structure Returned From A Public Method vulnerability in Apache Answer.
This issue affects Apache Answer: through 1.4.2.
If a user uses an externally referenced image, when a user accesses this image, the provider of the image may obtain private information about the ip address of that accessing user. Users are recommended to upgrade to version 1.4.5, which fixes the issue. In the new version, administrators can set whether external content can be displayed.
Credit:
Hamed Kohi (reporter) Luke Smith (reporter)
References:
https://answer.apache.org https://www.cve.org/CVERecord?id=CVE-2025-29868
Missing Release of Resource after Effective Lifetime vulnerability in Apache Answer.
This issue affects Apache Answer: through 1.3.5.
The password reset link remains valid within its expiration period even after it has been used. This could potentially lead to the link being misused or hijacked. Users are recommended to upgrade to version 1.3.6, which fixes the issue.
Missing Release of Resource after Effective Lifetime vulnerability in Apache Answer.
This issue affects Apache Answer: through 1.3.5.
User sends multiple password reset emails, each containing a valid link. Within the link's validity period, this could potentially lead to the link being misused or hijacked. Users are recommended to upgrade to version 1.3.6, which fixes the issue.