CVE Explorer

CVE-2026-28803

Open Forms allows users create and publish smart forms. Prior to 3.3.13 and 3.4.5, to be able to cosign, the cosigner receives an e-mail with instructions or a deep-link to start the cosign flow. The submission reference is communicated so that the user can retrieve the submission to be cosigned. Attackers can guess a code or modify the received code to look up arbitrary submissions, after logging in (with DigiD/eHerkenning/... depending on form configuration). This vulnerability is fixed in 3.3

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:612349ed58021c16cf2edf2b1238ff8a5513813a1152955728cb65f50ad705be

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"open-forms","vendor":"open-formulieren","versions":[{"status":"affected","version":">= 3.4.0-alpha.0, < 3.4.5"},{"status":"affected","version":"< 3.3.13"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:375284cffade54b67fa95c4afa496c1ed096a46e0380f18fde63f67f91e273e4 · sha256:e5012b4aae539d57… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:375284cffade54b67fa95c4afa496c1ed096a46e0380f18fde63f67f91e273e4 · sha256:e5012b4aae539d57… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-284","description":"CWE-284: Improper Access Control","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:375284cffade54b67fa95c4afa496c1ed096a46e0380f18fde63f67f91e273e4 · sha256:e5012b4aae539d57… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"name":"https://github.com/open-formulieren/open-forms/security/advisories/GHSA-2g49-rfm6-5qj5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/open-formulieren/open-forms/security/advisories/GHSA-2g49-rfm6-5qj5"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:375284cffade54b67fa95c4afa496c1ed096a46e0380f18fde63f67f91e273e4 · sha256:e5012b4aae539d57… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer