CVE-2026-77815

HIGHPre-NVD 7.57.5
EchelonGraph scoreLOW confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: secondary
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 7.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

to_abs_path in scripts/iib/tool.py normalised the requested path with os.path.normpath, which collapses dot segments but does not resolve symbolic links. A symlink placed inside a scanned directory therefore satisfies the containment comparison performed by is_path_trusted in scripts/iib/api.py while pointing outside that directory, and FileResponse follows the link when serving the response, so a link created in an image directory and targeting a file such as /etc/passwd discloses that file. Whether the check applies depends on get_enable_access_control in scripts/iib/tool.py: it returns true when IIB_ACCESS_CONTROL is set to enable, false when set to disable, and otherwise true when the host Stable Diffusion WebUI was started with share, ngrok, listen or server_name, falling back to false. Confinement is therefore active in the network-exposed WebUI deployments that rely on it, while a standalone run with no such option serves every readable file regardless of this flaw. The fix resolves the path with os.path.realpath.

CVSS v3
7.5
EG Score
7.5(low)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
—
EPSS %ILE
—
KEV
Not listed

Published

August 21, 2026

Last Modified

August 21, 2026

Advisory Details (7)

Auto-updated Aug 21, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
generic

Infinite Image Browsing Resolves Paths With normpath, Allowing Symlink Escape From Scanned Directories | Advisories | VulnCheck

https://www.vulncheck.com/advisories/infinite-image-browsing-resolves-paths-with-normpath-allowing-symlink-escape-from-scanned-directories
generic

GitHub - zanllp/infinite-image-browsing: A full-featured image/video management app with AI-powered organization and semantic search. Supports metadata from SD-webui, ComfyUI, Fooocus, NovelAI, StableSwarmUI, and more. Available as standalone app, SD-webui extension, or library. · GitHub

https://github.com/zanllp/infinite-image-browsing
generic

infinite-image-browsing/scripts/iib/api.py at v1.8.0 · zanllp/infinite-image-browsing · GitHub

https://github.com/zanllp/infinite-image-browsing/blob/v1.8.0/scripts/iib/api.py#L329-L344
generic

infinite-image-browsing/scripts/iib/tool.py at v1.8.0 · zanllp/infinite-image-browsing · GitHub

https://github.com/zanllp/infinite-image-browsing/blob/v1.8.0/scripts/iib/tool.py#L172-L175
github_commit

commit 4057a624c7a2 (zanllp/infinite-image-browsing)

Fix landed in zanllp/infinite-image-browsing commit 4057a624c7a2 — awaiting tagged release

https://github.com/zanllp/infinite-image-browsing/commit/4057a624c7a23a36f0b4dc6a545b40767d602450
github_pr

Fix path traversal in is_path_trusted (CWE-22/CWE-59)

Fix merged in zanllp/infinite-image-browsing PR #969 on 2026-08-21 — awaiting tagged release

https://github.com/zanllp/infinite-image-browsing/pull/969
generic

Path traversal in `is_path_trusted` — normpath + missing trailing separator · Issue #968 · zanllp/infinite-image-browsing · GitHub

https://github.com/zanllp/infinite-image-browsing/issues/968

Vendor Advisories for CVE-2026-77815(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 3× in last 7d / 3× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-21 15:21 UTCEG score recompute
  2. 2026-08-21 15:10 UTCEG score recompute
  3. 2026-08-21 15:09 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(4)

What is CVE-2026-77815?
CVE-2026-77815 is a high vulnerability published on August 21, 2026. toabspath in scripts/iib/tool.py normalised the requested path with os.path.normpath, which collapses dot segments but does not resolve symbolic links. A symlink placed inside a scanned directory therefore satisfies the containment comparison performed by ispathtrusted in scripts/iib/api.py while…
When was CVE-2026-77815 disclosed?
CVE-2026-77815 was first published in the National Vulnerability Database on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-77815?
CVE-2026-77815 has a CVSS v3 base score of 7.5 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-77815?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-77815, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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