CVE-2026-40884Disclosure(goshs / goshs)

LOWCVSS 9.8 · CRITICAL

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

Patch goshs goshs systems immediately
Hunt for exploitation attempts and persistence artifacts
Increase monitoring for publicly documented tradecraft

Recommended action window: High priority (within 72h)

NVD description

goshs is a SimpleHTTPServer written in Go. Prior to 2.0.0-beta.6, goshs contains an SFTP authentication bypass when the documented empty-username basic-auth syntax is used. If the server is started with -b ':pass' together with -sftp, goshs accepts that configuration but does not install any SFTP password handler. As a result, an unauthenticated network attacker can connect to the SFTP service and access files without a password. This vulnerability is fixed in 2.0.0-beta.6.

goshs CVEs Back to dashboard

2.0/ 10 priority

Sources & remediation

Exploit / PoC references

Weakness type (CWE)

CWE-306

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

goshs

Threat summary

Public PoC is present in monitored signal
Patch or workaround signal is available
4 mentions across 2 observed days
Momentum state: stable

What's happening

PoC mentioned or linked in 1 signal
Patch or workaround mentioned in 1 signal
Technical details provided in 4 signals
Disclosure: 3 classified signals
Peaked 1d ago at 3 mentions (2026-04-16); latest day: 1
4 total mentions across 2 days

Affected systems

Vendors

goshs

Products

goshs

1 version affected across 1 product

Deep dive

Activity timeline4 mentions / 2d

Signal classification2 categories

Disclosure

375.0%

Patch

125.0%

Referenced assets3 URLs

By indicator

Classification over time

Date	Total	Labels

2026-04-16	3	Disclosure2Patch1
2026-04-21	1	Disclosure1

Full discourse4 posts

Gray Hats@the_yellow_fall176d
Patch
Critical 9.8 flaw in goshs (CVE-2026-40884) allows unauthenticated SFTP access when using specific auth syntax. Secure your files—upgrade to v2.0.0-beta.6 now! #goshs #CVE202640884 #InfoSec #CyberSecurity #Pentesting #SFTP #BugBounty https://securityonline.info/goshs-sftp-authentication-bypass-cve-2026-40884/ https://t.co/cgMz4c4x7M
Post summary
The post highlights a critical flaw in goshs (CVE‑2026‑40884) that permits unauthenticated SFTP access and stresses the need to upgrade to v2.0.0‑beta.6, underscoring the immediate patch availability.
080127649
12.4K followersView on X
kokumօtօ@__kokumoto176d
Disclosure
goshsのSFTP実装に重大(Critical)な脆弱性。goshsはPythonのSimpleHTTPServerの多機能互換実装。CVE-2026-40884はCVSSスコア9.8で、特定のBasic認証書式における取扱不備。ユーザ名を特定せずパスワードのみを設定している場合、SFTPではパスワードが検証されない。 https://securityonline.info/goshs-sftp-authentication-bypass-cve-2026-40884/
Post summary
The passage announces the discovery of a critical vulnerability (CVE-2026-40884) in the goshs SFTP implementation, detailing the Basic authentication bypass and the high CVSS score, but does not include exploit code, active exploitation evidence, or patch information.
01010788
7.4K followersView on X
Vulmon Vulnerability Feed@VulmonFeeds171d
Disclosure
CVE-2026-40884 SFTP Authentication Bypass in goshs Prior to 2.0.0-beta.6 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-40884
Post summary
The text announces CVE‑2026‑40884, an authentication bypass vulnerability affecting goshs versions prior to 2.0.0‑beta.6.
0000040
4.0K followersView on X
PulsePatch.io@pulsepatchio176d
Disclosure
`goshs` SFTP password authentication is vulnerable to a bypass via an empty username, leading to unauthorized access (CVE-2026-40884). Assess `goshs` deployments for exposure. #SFTP #AuthBypass #Cybersecurity https://www.pulsepatch.io/posts/cve-2026-40884-goshs-sftp-auth-bypass
Post summary
The post announces a newly discovered SFTP authentication bypass in goshs (CVE‑2026‑40884), detailing the exploit vector but not providing PoC, exploit code, or patch information.
0000044
12 followersView on X

CPE platform detail6 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

6 of 6 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	goshs	goshs	-	go	-
App	goshs	goshs	2.0.0	go	-
App	goshs	goshs	2.0.0	go	-
App	goshs	goshs	2.0.0	go	-
App	goshs	goshs	2.0.0	go	-
App	goshs	goshs	2.0.0	go	-

Explore more

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What researchers are saying

CVE-2026-40884

kokumօtօ[verified]@__kokumotoDisclosure

The passage announces the discovery of a critical vulnerability (CVE-2026-40884) in the goshs SFTP implementation, detailing the Basic authentication bypass and the high CVSS score, but does not include exploit code, active exploitation evidence, or patch information.

Gray Hats@the_yellow_fallPatch

The post highlights a critical flaw in goshs (CVE‑2026‑40884) that permits unauthenticated SFTP access and stresses the need to upgrade to v2.0.0‑beta.6, underscoring the immediate patch availability.

Vulmon Vulnerability Feed@VulmonFeedsDisclosure

The text announces CVE‑2026‑40884, an authentication bypass vulnerability affecting goshs versions prior to 2.0.0‑beta.6.

PulsePatch.io@pulsepatchioDisclosure

The post announces a newly discovered SFTP authentication bypass in goshs (CVE‑2026‑40884), detailing the exploit vector but not providing PoC, exploit code, or patch information.