expat_erl.c in ejabberd before 2.1.7 and 3.x before 3.0.0-alpha-3, and exmpp before 0.9.7, does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.
総合評価: CVE-2011-1753 は中リスク（48.5/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 1.94%、82 パーセンタイル） 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2025-03-30 | 2.07% | 1.94% | -0.13% |
| 2 | 2025-03-29 | 1.94% | 2.07% | +0.13% |
| 3 | 2025-03-17 | — | 1.94% | — |
EPSS の全履歴 （全 6 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
medium | CVE-2011-1753 medium priority: Debian including 1 source packages (ejabberd), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2011-1753 |
gentoo
|
normal | CVE-2011-1753: 1 GLSA(s) (201206-10), 1 atom(s) (net-im/ejabberd); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2011-1753 |
ubuntu
|
medium | CVE-2011-1753 medium priority: Ubuntu including 1 source packages (ejabberd), 10 status rows across 10 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, upstream): not-affected 5, ignored 3, released 2. | https://ubuntu.com/security/CVE-2011-1753 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| process-one | ejabberd | <= 2.1.6 | cpe:2.3:a:process-one:ejabberd:*:*:*:*:*:*:*:* |
| process-one | ejabberd | 0.9 | cpe:2.3:a:process-one:ejabberd:0.9:*:*:*:*:*:*:* |
| process-one | ejabberd | 0.9.1 | cpe:2.3:a:process-one:ejabberd:0.9.1:*:*:*:*:*:*:* |
| process-one | ejabberd | 0.9.8 | cpe:2.3:a:process-one:ejabberd:0.9.8:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.0.0 | cpe:2.3:a:process-one:ejabberd:1.0.0:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.1.0 | cpe:2.3:a:process-one:ejabberd:1.1.0:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.1.1 | cpe:2.3:a:process-one:ejabberd:1.1.1:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.1.1.0 | cpe:2.3:a:process-one:ejabberd:1.1.1.0:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.1.1.1 | cpe:2.3:a:process-one:ejabberd:1.1.1.1:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.1.2 | cpe:2.3:a:process-one:ejabberd:1.1.2:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.1.3 | cpe:2.3:a:process-one:ejabberd:1.1.3:*:*:*:*:*:*:* |
| process-one | ejabberd | 1.1.14 | cpe:2.3:a:process-one:ejabberd:1.1.14:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.0 | cpe:2.3:a:process-one:ejabberd:2.0.0:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.0 | cpe:2.3:a:process-one:ejabberd:2.0.0:beta1:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.0 | cpe:2.3:a:process-one:ejabberd:2.0.0:rc1:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.1_2 | cpe:2.3:a:process-one:ejabberd:2.0.1_2:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.2 | cpe:2.3:a:process-one:ejabberd:2.0.2:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.3 | cpe:2.3:a:process-one:ejabberd:2.0.3:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.4 | cpe:2.3:a:process-one:ejabberd:2.0.4:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.0.5 | cpe:2.3:a:process-one:ejabberd:2.0.5:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.1.0 | cpe:2.3:a:process-one:ejabberd:2.1.0:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.1.1 | cpe:2.3:a:process-one:ejabberd:2.1.1:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.1.2 | cpe:2.3:a:process-one:ejabberd:2.1.2:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.1.3 | cpe:2.3:a:process-one:ejabberd:2.1.3:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.1.4 | cpe:2.3:a:process-one:ejabberd:2.1.4:*:*:*:*:*:*:* |
| process-one | ejabberd | 2.1.5 | cpe:2.3:a:process-one:ejabberd:2.1.5:*:*:*:*:*:*:* |
| process-one | ejabberd | 3.0.0 | cpe:2.3:a:process-one:ejabberd:3.0.0:alpha1:*:*:*:*:*:* |
| process-one | ejabberd | 3.0.0 | cpe:2.3:a:process-one:ejabberd:3.0.0:alpha2:*:*:*:*:*:* |
| process-one | exmpp | <= 0.9.6 | cpe:2.3:a:process-one:exmpp:*:*:*:*:*:*:*:* |
| process-one | exmpp | 0.9.1 | cpe:2.3:a:process-one:exmpp:0.9.1:*:*:*:*:*:*:* |
| process-one | exmpp | 0.9.2 | cpe:2.3:a:process-one:exmpp:0.9.2:*:*:*:*:*:*:* |
| process-one | exmpp | 0.9.3 | cpe:2.3:a:process-one:exmpp:0.9.3:*:*:*:*:*:*:* |
| process-one | exmpp | 0.9.4 | cpe:2.3:a:process-one:exmpp:0.9.4:*:*:*:*:*:*:* |
| process-one | exmpp | 0.9.5 | cpe:2.3:a:process-one:exmpp:0.9.5:*:*:*:*:*:*:* |