OpenAkita File Upload API upload cross site scripting

published 2026-08-03 3 mo ago modified 2026-08-12 2 mo ago also EUVD-2026-52452

cvss: 3.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits: 0; none known

A security flaw has been discovered in OpenAkita up to 1.27.12. This vulnerability affects unknown code of the file /api/upload of the component File Upload API. The manipulation of the argument File results in cross site scripting. The attack may be performed from remote. A high complexity level is associated with this attack. It is stated that the exploitability is difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 3 mo ago (2026-08-04)

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

app.notion.com https://app.notion.com/p/OpenAkita-Storage-type-XSS-36b6b282520c80e790d4d95013f67e31?v=399f40ee1bc649168d81ef87a0f77f31&source=copy_link referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	2.3	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
CNA	3.1	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
CNA	3.0	3.1	CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
CNA	2.0	2.6	AV:N/AC:H/Au:N/C:N/I:P/A:N/E:POC/RL:ND/RC:UR
CNA	4.0	1.3	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	3.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
CNA	2.0	2.6	AV:N/AC:H/Au:N/C:N/I:P/A:N

Affected products

n/a OpenAkita

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation
CWE-94 Improper Control of Generation of Code

References

app.notion.com /p/OpenAkita-Storage-type-XSS-36b6b282520c80e790d4d95013f67e31?v=399f40ee1bc649168d81ef87a0f77f31&source=copy_
exploit
vuldb.com /vuln/385609
vdb-entry, technical-description
vuldb.com /vuln/385609/cti
signature, permissions-required
vuldb.com /cve/CVE-2026-18682
third-party-advisory
vuldb.com /submit/855312
third-party-advisory

Sources

CVE List CVE-2026-18682
NVD CVE-2026-18682

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary