Security readout for executives and security teams
Plain-English summary
Lychee before 7.1.0 may unlock more photo albums than intended. If two public, password-protected albums use the same password, unlocking one also unlocks the others. This can expose private album contents to someone who only knew one shared password.
Executive priority
Treat as a targeted privacy and access-control issue, not an emergency infrastructure risk. Prioritize upgrades for internet-facing Lychee sites or environments hosting sensitive photos, especially where album passwords may have been reused.
Technical view
CVE-2026-22784 is an authorization flaw in Lychee album password unlocking. The application propagates an unlock state across all public albums sharing the same password, causing unintended access to other protected albums. It is classified as CWE-863 and affects Lychee versions before 7.1.0. The vendor advisory states it is fixed in 7.1.0.
Likely exposure
Exposure is limited to Lychee deployments before 7.1.0 using public, password-protected albums where multiple albums share the same password. The confidentiality impact is low in the CVSS data, with no integrity or availability impact stated.
Exploitation context
The CVSS vector indicates network access, low complexity, no privileges, and user interaction required. The source bundle does not indicate known active exploitation, and KEV status is false. Practical risk depends on shared album passwords and sensitivity of exposed photos.
Researcher notes
Evidence comes from the CVE record and Lychee GitHub advisory. The vulnerability is fixed in 7.1.0. The commit reference is included, but this assessment does not infer additional affected components or provide exploit procedure beyond the documented authorization behavior.
Mitigation direction
- Upgrade Lychee to version 7.1.0 or later.
- Review vendor advisory for any additional operational guidance.
- Avoid reusing passwords across separate public protected albums.
- Assess exposed albums for sensitive content if password reuse existed.
Validation and detection
- Inventory Lychee instances and confirm installed versions.
- Identify public password-protected albums on affected versions.
- Check whether different albums reused identical passwords.
- After upgrading, confirm unlock behavior no longer crosses album boundaries.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-863: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-22784 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Low
- CVSS
- 2.3 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
2.3LowVector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-jj56-2c54-4f25CVE reference · x_refsource_CONFIRM
- https://github.com/LycheeOrg/Lychee/commit/f021a29f9ab2bafa81d9f5e32ff5bc89915c7d41CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Incorrect Authorization
Incorrect Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.