AnQiCMS Help Document and User Guide
The early data of TLS allows the client to send the request in the first round trip, saving the next handshake wait time, at the cost of this type of request being at risk of replay. 425 Too Early indicates that the server is unwilling to take the risk of processing a potentially replayed request and prefers to reject first. This article discusses what the early data saves, where the risk falls on what type of request, why idempotent and non-idempotent need to be treated separately, and what trade-offs a service with Go as the technology stack needs to make at this level.
The cache expiration does not mean that you need to download the entire content again. ETag is the identifier of a version of the resource, and a new value must be generated when the resource content changes; the client uses If-None-Match to return the old value during a revisit, and if the server compares it and finds it consistent, it will only return a status code without the body. This article talks about what this identifier represents, the difference between strong verification and weak verification, why the weak identifier can affect segmented requests, and how sites with frequently changing content can use it to reduce duplicate transmission.
The browser adds several Sec-Fetch request headers that indicate the source relationship, which frontend scripts cannot change. The values distinguish between same-origin, same-site, cross-site, and no-origin, and the server decides whether to allow or deny based on these relationships, thereby providing a complementary defense against cross-site request forgery; these headers are only sent in requests from trusted addresses. This article discusses the meanings of the four values, the way to allow based on context, and what they each manage in round-level operation approval.
When logging out, the cache and local storage left in the browser will not disappear automatically. The Clear-Site-Data response header is a clear signal for the client, which can clear cache, credentials, storage, and execution contexts item by item, and it only takes effect in encrypted connections: credentials are cleared for the entire registration domain, and storage is only cleared for the current source. The login status within the site is carried by JWT, and the local data at this client layer relies on it to complete the cleanup. It is especially worth adding on public devices.
The page embeds third-party videos with two levels of restrictions: source domain names are allowed to pass based on the whitelist, and capabilities such as camera, location, and automatic playback are authorized in the minimum set item by item. In the update records of PbootCMS V3.2.18, the default source strategy for trusted video domains is retained, and the token whitelist is set for the allow attribute. This article explains why the embedded frame carries scripts and media capabilities at the same time, how to differentiate between precise domain and subdomain wildcard, and why the release and authorization should be configured separately.
When a website is behind a reverse proxy, the program often reads the connection source as the proxy address, and the content of the forwarding header is controlled by the client. Confusing the two layers can lead to login locking and incorrect objects in the blacklist. PbootCMS has fixed the issue of unconditional trust in the source forwarding header in the update records of V3.2.25. This article discusses the origin of the two layers of addresses, the practice of taking the most right可信 value in the trusted link, and which layer to use for throttling and locking.
If the batch deletion of background messages directly concatenates the number list sent from the front-end into the deletion conditions, it may delete out-of-range content in one request. PbootCMS has fixed this kind of parameter injection in the update records of V3.2.18, strictly checking the id list to be deleted. This article explains why the batch interface has expanded the impact range, how to verify the type and existence of the number, why the deletion range needs to be recalculated on the server side, and what the recycle bin can accommodate after accidental deletion.
PbootCMS has fixed the risk of script tag output in site tag output script and enhanced tag page parameter filtering - when editable content enters the template engine with opening tags, the data will be treated as code. This article explains where the step of data becoming code occurs, why the tag output position needs to be filtered, and why HTML, attributes, scripts, and URLs need to be escaped separately, as well as why filtering earlier saves time and has a layered closing effect.
The image processing library decodes the binary content uploaded by users on the server, and remote code execution often occurs at the decoder layer rather than the business code. PbootCMS added the dangerous coder gate, input format whitelist, and resource limit to the security hardening in the V3.2.22 version record, and fixed the misjudgment of legal images. This article explains the three gates of entry for the site upload link, as well as why it would hurt normal images if it is too tight.
The rating of Drupal announcement SA-CONTRIB-2026-215 is only Less critical, but the handling method has completely removed the email example function, because the example has an issue with unbounded resource allocation. Should the demonstration code be retained on the production site, the criterion should be the exposure surface rather than the risk rating. This article analyzes the three types of risks brought out by the example code, the cleanup checklist at the deployment stage, and the restrictions when retaining the demonstration entry.
