The XMPP Newsletter September 2026

 Posted on October 6, 2026 |  10 minutes |  Newsletter |  XMPP Communication Team and Contributors
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Welcome to the XMPP Newsletter, great to have you here again! This issue covers the month of September 2026.

The XMPP Newsletter is brought to you by the XSF Communication Team and contributors of the XMPP community.

Just like any other product or project by the XSF, the Newsletter is the result of the voluntary work of its members and contributors. If you are happy with the services and software you may be using, please consider saying thanks or help these projects!

Interested in contributing to the XSF Communication Team? Read more at the bottom.

XMPP Events

See also the XMPP Events page.

Videos and Talks Videos and Talks

XMPP Articles

Software news

Clients and applications

Servers

  • ejabberd has released version 26.09 of its robust, scalable and extensible XMPP server. This security release fixes an unauthenticated remote code execution, a BOSH denial of service and a cross-tenant access issue in MUC and rosters, so updating is strongly encouraged. It also adds an optional XEP-0158 hashcash CAPTCHA for in-band registration and improves support for vhost-admins. Read the release announcement for all the details.
  • MongooseIM has released versions 6.9.0 of their enterprise instant messaging solution. You can read all the details in the changelog.
  • Prosody IM is pleased to announce version 13.0.7, a new minor release from the stable branch. This is a relatively small release, but several of the bug fixes are important in their own ways. One is notable for causing problems on BSD platforms - it is strongly recommend that BSD users upgrade - and also switched the TLS profile source over to tlsref.org, which is the new home for the configuration recommendations used, previously published by Mozilla. Make sure to read the changelog for all the details!

Libraries & Tools

XSF Announcements

XSF Membership

Being an elected member of the XMPP Standards Foundation signals a commitment to open standards and professional engagement in / with the XMPP community. Here, your membership helps position the XSF as a healthy organization, which in itself is valuable. It also grants voting rights on technical and administrative matters within the XSF. The application is a light-weight and free of cost process and you can use your membership to get more involved more easily, too. If you are interested in joining the XMPP Standards Foundation as a member, please apply to our 4th quarterly call for members admission before November 29, 2026, 00:00 UTC.

XSF Board and Council Elections 2026

The XMPP Standards Foundation is calling for individuals to compose the Board of Directors and members to serve on the XMPP Council for the 2026/2027 period. If you are interested in running for the Board of Directors or the XMPP Council, please add a wiki page about your candidacy to one or both of the aforementioned sections before November 8, 2026, 00:00 UTC. Get involved in the XMPP Standards Foundation organization decisions and with the specifications the XSF publish. Note: XMPP Council members must be elected members of the XSF; however, there is no such restriction for the Board of Directors.

Extensions and specifications

The XMPP Standards Foundation develops extensions to XMPP in its XEP series in addition to XMPP RFCs. Developers and other standards experts from around the world collaborate on these extensions, developing new specifications for emerging practices, and refining existing ways of doing things. Proposed by anybody, the particularly successful ones end up as Final or Active - depending on their type - while others are carefully archived as Deferred. This life cycle is described in XEP-0001, which contains the formal and canonical definitions for the types, states, and processes. Read more about the standards process. Communication around Standards and Extensions happens in the Standards Mailing List (online archive).

Proposed

The XEP development process starts by writing up an idea and submitting it to the XMPP Editor. Within two weeks, the Council decides whether to accept this proposal as an Experimental XEP.

  • SASL2 Terms of Service Acceptance Task
    • This specification defines a SASL2 task, per the extensibility mechanism of XEP-0388, that lets a server require a user to accept the current terms of service before authentication completes.
  • Multistream XMPP
    • Multistream protocols such as QUIC and WebTransport offer significant performance improvements to XMPP, particularly over constrained or degraded networks. This specification defines a binding for the XMLStream onto multistream transports, including both QUIC and WebTransport.

New

  • No new XEPs this month.

Deferred

If an experimental XEP is not updated for more than twelve months, it will be moved off Experimental to Deferred. If there is another update, it will put the XEP back onto Experimental.

  • No XEPs deferred this month.

Updated

  • No XEPs updated this month.

Last Call

Last calls are issued once everyone seems satisfied with the current XEP status. After the Council decides whether the XEP seems ready, the XMPP Editor issues a Last Call for comments. The feedback gathered during the Last Call can help improve the XEP before returning it to the Council for advancement to Stable.

  • No last call this month.

Stable

  • No XEP moved to stable this month.

Deprecated

  • No XEPs deprecated this month.

Rejected

  • No XEPs rejected this month.

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Newsletter Contributors & Translations

This is a community effort, and we would like to thank translators for their contributions. Volunteers and more languages are welcome! Translations of the XMPP Newsletter will be released here (with some delay):

  • Contributors:

    • To this issue: Adrien ’neox’ Bourmault, cal0pteryx, emus, Gonzalo Raúl Nemmi, Ludovic Bocquet, XSF iTeam
  • Translations:

    • French: Adrien Bourmault (neox), alkino, anubis, Arkem, Benoît Sibaud, mathieui, nyco, Pierre Jarillon, Ppjet6, seveso, Ysabeau

Help us to build the newsletter

This XMPP Newsletter is produced collaboratively by the XMPP community. Each month’s newsletter issue is drafted in this simple pad. At the end of each month, the pad’s content is merged into the XSF GitHub repository. We are always happy to welcome contributors. Do not hesitate to join the discussion in our XSF Communications Team group chat (MUC) and thereby help us sustain this as a community effort. You have a project and want to spread the news? Please consider sharing your news or events here, and promote it to a large audience.

Tasks we do on a regular basis:

  • gathering news in the XMPP universe
  • short summaries of news and events
  • summary of the monthly communication on extensions (XEPs)
  • review of the newsletter draft
  • preparation of media images
  • translations
  • communication via media accounts

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