Issues

• Label expressions with "!" keep using an agent's old labels after its labels change

  jenkinsci/jenkins#27546 · Filter by author Kanhaiya76618 opened on Oct 14, 2026

• Label.parse returns one atom for a space-separated label string once an atom with that whole name exists

  Bug

  jenkinsci/jenkins#27544 · Filter by author jhittner-bi opened on Oct 14, 2026
  2

• Jenkins 2.586: commons-codec 1.23.0 breaks SAML login (Shibboleth Base64Support.decode rejects nearly all input)

  regression
  Bug

  jenkinsci/jenkins#27539 · Filter by author babylonnian opened on Oct 14, 2026
  1

  

• Remove core code to support external-monitor-job plugin

  Enhancement

  jenkinsci/jenkins#27532 · Filter by author daniel-beck opened on Oct 12, 2026
  2

• Manage Jenkins keeps scheduling layout updates after an administrative warning is dismissed

  jenkinsci/jenkins#27501 · Filter by author doraem-on opened on Oct 6, 2026
  3

• [BUG] CLI arguments containing newlines or tabs are corrupted in -ssh mode

  jenkinsci/jenkins#27495 · Filter by author thswlsqls opened on Oct 5, 2026
  3

• Experimental job page: parameterized jobs load <script src="/static/<hash>/"> (bare static root), causing a "Refused to execute script … MIME type text/html" console error

  jenkinsci/jenkins#27476 · Filter by author YongGoose opened on Oct 3, 2026
  2

• Experimental job page: app bar / "More actions" links for Actions whose getUrlName() starts with / ignore the context path

  jenkinsci/jenkins#27475 · Filter by author YongGoose opened on Oct 3, 2026
  3

• Build History button not visible to non-admin users

  Bug

  jenkinsci/jenkins#27469 · Filter by author PlatformEngineeringTeam opened on Oct 2, 2026
  10

• ListView deletion listener scans all Jenkins items for every deleted multibranch child

  jenkinsci/jenkins#27461 · Filter by author eshaffer321 opened on Sep 30, 2026
  3

• Consider using XML_1_1_REPLACEMENT mode for XStream PrettyPrintWriter

  Enhancement

  jenkinsci/jenkins#27458 · Filter by author sephiroth-j opened on Sep 29, 2026
  5

• Jenkins#getLabel unquotes before the cache lookup, so quoted atoms and unquoted expressions collide

  jenkinsci/jenkins#27452 · Filter by author hjhafner opened on Sep 28, 2026
  5

• Missing timeout on inbound TCP agent handshakes can exhaust Jenkins resources

  jenkinsci/jenkins#27443 · Filter by author bupt-Yy-young opened on Sep 26, 2026
  8

• Chokepoint in Jelly parsing?

  jenkinsci/jenkins#27429 · Filter by author olivierdagenais opened on Sep 23, 2026
  8

• Label expressions with different whitespace create duplicate Label instances; load statistics only update one of them

  jenkinsci/jenkins#27403 · Filter by author hjhafner opened on Sep 18, 2026
  2

• Job with builds screen layout on thin screen (and mobile)

  ux-untriagedweb-ui
  Enhancement

  jenkinsci/jenkins#27400 · Filter by author Eccenux opened on Sep 17, 2026
  18

• Add pagination or virtual scrolling support to Console Output for large build logs

  Enhancement

  jenkinsci/jenkins#27384 · Filter by author xsmq opened on Sep 14, 2026
  5

• Add a timeout to the update center refresh http calls DownloadService loadJSON and loadJSONHTML

  jenkinsci/jenkins#27377 · Filter by author gbhat618 opened on Sep 11, 2026
  3

• jenkins-cli make requests with user-agent java-$version

  Enhancement

  jenkinsci/jenkins#27372 · Filter by author asarubbo opened on Sep 10, 2026
  6

• Severe CPS throughput collapse: ReferenceManager$CallBackedManager.removeStallEntries degrades to O(n) under heavy class churn

  jenkinsci/jenkins#27334 · Filter by author LBCross opened on Sep 3, 2026
  3

• Delete button hidden on nested repeatable (Transfer Set) even with multiple items — show-if-not-only misapplied

  Bug

  jenkinsci/jenkins#27321 · Filter by author jyp-git opened on Sep 2, 2026
  6

• Support starting leased nodes with throttle concurrent builds when there are remaining free executor on already started node with same label

  Enhancement

  jenkinsci/jenkins#27318 · Filter by author apupier opened on Sep 1, 2026
  3

• NodeProvisioner dispatches Cloud.provision() on the shared Timer pool with no timeout or isolation, risking instance-wide periodic-maintenance starvation

  jenkinsci/jenkins#27308 · Filter by author om7057 opened on Aug 29, 2026
  5

• "Build Now" from job dropdown menu intermittently fails in Firefox (NS_BINDING_ABORTED) — fetch() not kept alive across window.location.href navigation

  jenkinsci/jenkins#27302 · Filter by author tomaskovacik opened on Aug 25, 2026
  3

• f:validateButton shows full error page instead of return code based message

  Bug

  jenkinsci/jenkins#27275 · Filter by author Anexus5919 opened on Aug 19, 2026