CVE-2026-49256
Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, restricted tag and tag-group names att
CVSS
7.5
Alto
EPSS
0.4%
p30
KEV
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Exploit Today
9
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Publicado: 9 jul 2026 · Última mod.: 14 jul 2026 · CWE-200
0.4%EPSS · 30 días0.4%
2026-07-102026-07-21
Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, restricted tag and tag-group names attached to publicly readable categories as allowed_tags, allowed_tag_groups, or required tag groups could leak to anonymous and unauthorized users through category and group endpoints. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.
- github.comhttps://github.com/discourse/discourse/releases/tag/v2026.1.5
- github.comhttps://github.com/discourse/discourse/releases/tag/v2026.4.2
- github.comhttps://github.com/discourse/discourse/releases/tag/v2026.5.1
- github.comhttps://github.com/discourse/discourse/releases/tag/v2026.6.0
- github.comhttps://github.com/discourse/discourse/security/advisories/GHSA-mwp7-572g-6qpx
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2026-472477.5 ALT—
——0libheif is a HEIF and AVIF file format decoder and encoder. Prior to version 1.22.0, two bugs in libheif chain to leak process heap memory as visible pixel values in decoded grid images. An attacker who uploads a crafted AVIF/HEIC file to any server-side image processor (WordPress, Sharp/libvips, ImageMagick, etc.) can recover heap data - including library function pointers sufficient to defeat ASLR, or any other secret - from the publicly-downloadable transcoded JPEG/PNG/WebP output. Local attack vectors are also possible. Version 1.22.0 fixes the issue.14hCVE-2026-565793.1 BAJ—
——0HCL MyCloud was affected with License Key Revealed in HTTP Response. It may enable attackers to misuse the exposed information and compromise the application's security.17hCVE-2026-565782.2 BAJ—
——0HCL MyCloud was affected by Server Version Disclosure. It may help attackers identify and exploit known vulnerabilities affecting the disclosed software versions.17hCVE-2026-473955.5 MED—
——0PraisonAI is a multi-agent teams system. Prior to version 4.6.40 of PraisonAI, corresponding to version 1.6.40 of praisonaiagents, PraisonAI's direct-prompt CLI automatically expands `@url:` mentions in raw prompt text before agent execution begins. If a prompt contains `@url:<http-or-https-url>`, the CLI calls `MentionsParser.process(...)`. The `@url:` handler then performs a direct `urllib.request.urlopen()` request to the attacker-controlled URL and returns the response body. That response body is prepended to the final model prompt context. There is no loopback/private-address restriction, no metadata-service restriction, and no approval gate before the fetch. As a result, attacker-influenced prompt text can cause the operator's machine to fetch localhost-only HTTP resources and inject the response into model context. PraisonAI version 4.6.40 and praisonaiagents version 1.6.40 contain a fix.18hCVE-2026-47394——
——0PraisonAI is a multi-agent teams system. Prior to version 4.6.40, the fix for GHSA-9mqq-jqxf-grvw / CVE-2026-44336 is incomplete. The original advisory description named four vulnerable handlers in `mcp_server/adapters/cli_tools.py`. Commit `68cc9427` ("fix(security): harden MCP rules path handling…") added a `_resolve_rule_path()` helper and applied it to `rules.create`, `rules.show`, and `rules.delete`. `workflow.show` was left unchanged. Two adjacent handlers in the same file have the same pattern, `workflow.validate` and `deploy.validate`. Neither was mentioned in the original advisory. Both remained unchanged. The original advisory also identified the dispatcher (`server.py:281-298`) as a root cause. It accepts unvalidated `**kwargs` from `params["arguments"]` with no enforcement against the tool's declared `input_schema`. That code is unchanged prior to version 4.6.40. A single unauthenticated MCP `tools/call` to `praisonai.workflow.show` returns the contents of any file the host user can read: `/etc/passwd`, `~/.ssh/id_rsa`, `~/.aws/credentials`, or any project `.env`. Version 4.6.40 contains an updated fix.18hCVE-2026-565843.7 BAJ—
——0HCL IEM was affected with the Information disclosure nginx server. It may enable attackers to identify outdated software versions and target known vulnerabilities or publicly available exploits.19h