Issues

• Valid YAML rejected: "found a tab character where an indentation space is expected"

  bug
  oasdiff/oasdiff#1356 · Filter by author josephaxisa opened on Oct 22, 2026
  2

• flatten: nullable: true next to allOf is dropped, so --flatten-allof misses a property becoming not nullable

  oasdiff/oasdiff#1348 · Filter by author remcowesterhoud opened on Oct 21, 2026
  1

• checker: report security scheme changes per operation that uses the scheme

  oasdiff/oasdiff#1345 · Filter by author reuvenharrison opened on Oct 20, 2026

• Research: match paths once per diff, with an index

  oasdiff/oasdiff#1341 · Filter by author reuvenharrison opened on Oct 20, 2026
  1

• Research: avoid copying kin-openapi maps in the diff

  oasdiff/oasdiff#1338 · Filter by author reuvenharrison opened on Oct 19, 2026

• Option to exclude "tags" from diffs

  oasdiff/oasdiff#1337 · Filter by author timabell opened on Oct 19, 2026
  1

• validate: flag required readOnly/writeOnly properties that contradict themselves in OpenAPI 3.1

  enhancement
  oasdiff/oasdiff#1329 · Filter by author reuvenharrison opened on Oct 18, 2026

• Report changes that weaken security, separately from breaking changes

  oasdiff/oasdiff#1325 · Filter by author reuvenharrison opened on Oct 18, 2026

• checker: security alternatives render with an untranslated AND

  oasdiff/oasdiff#1324 · Filter by author reuvenharrison opened on Oct 18, 2026

• checker: name *diff.MethodDiff variables methodDiff

  oasdiff/oasdiff#1322 · Filter by author reuvenharrison opened on Oct 18, 2026

• Load-time rewrites should apply to the checks only, not to oasdiff diff

  oasdiff/oasdiff#1321 · Filter by author reuvenharrison opened on Oct 16, 2026
  1

• diff: apply path and operation filters once, before the sub-diffs

  oasdiff/oasdiff#1320 · Filter by author reuvenharrison opened on Oct 16, 2026
  1

• checker: an operation's effective servers are not compared

  oasdiff/oasdiff#1318 · Filter by author reuvenharrison opened on Oct 16, 2026

• checker: removing a media type or status code that a wildcard or range still covers is reported as a removal

  oasdiff/oasdiff#1317 · Filter by author reuvenharrison opened on Oct 16, 2026

• coverage: model a list appearing or emptying as its own edit

  oasdiff/oasdiff#1316 · Filter by author reuvenharrison opened on Oct 16, 2026

• checker: deleting a property's sunset date, or moving it earlier, is not reported

  oasdiff/oasdiff#1315 · Filter by author reuvenharrison opened on Oct 15, 2026

• checker: response header deprecation and sunset dates are not checked

  oasdiff/oasdiff#1314 · Filter by author reuvenharrison opened on Oct 15, 2026

• Support Swagger 2.0 through --auto-upgrade, and refuse it without the flag

  oasdiff/oasdiff#1311 · Filter by author reuvenharrison opened on Oct 15, 2026

• checker: a constraint that moves into a composition is reported as removed

  oasdiff/oasdiff#1309 · Filter by author reuvenharrison opened on Oct 15, 2026

• checker: the allOf disclaimer lowers an added allOf branch from error to warning

  oasdiff/oasdiff#1308 · Filter by author reuvenharrison opened on Oct 15, 2026
  1

• checker: an anyOf or oneOf that appears where there was none is reported as a widening

  oasdiff/oasdiff#1307 · Filter by author reuvenharrison opened on Oct 15, 2026
  1

• coverage: a check's claim is trusted without firing it, so a property check hides a missing body check

  oasdiff/oasdiff#1296 · Filter by author reuvenharrison opened on Oct 8, 2026
  2

• checker: value-keyword changes go unreported at some schema positions

  oasdiff/oasdiff#1295 · Filter by author reuvenharrison opened on Oct 8, 2026

• validate: add --flatten-allof to find conflicts that allOf splits across subschemas

  oasdiff/oasdiff#1294 · Filter by author reuvenharrison opened on Oct 8, 2026

• checker: object parameter properties are only checked for headers (became-enum, became-required, new required property)

  oasdiff/oasdiff#1277 · Filter by author reuvenharrison opened on Oct 6, 2026